Sea-floor spreading is the process that occurs at mid-ocean ridges where tectonic plates diverge. As a result of decreased pressure, the solid mantle from the asthenosphere rises and begins to melt due to decompression and heat, resulting in magma that forms new oceanic crust.
Explanation:The process you are referring to is known as sea-floor spreading, a theory in earth science. At mid-ocean ridges, tectonic plates separate, creating a gap. As this happens, pressure in the asthenosphere decreases, causing the solid mantle to decompress and rise towards the surface. This decompression results in partial melting of the mantle. This molten, or semi-molten rock, known as magma, then rises to fill the gap created by the diverging plates. The magma cools and solidifies to form new oceanic crust. Therefore, the mantle in the asthenosphere rises and begins to melt due to the decompression and addition of heat, not because it is already in a liquid state.
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At mid-ocean ridges, as two tectonic plates diverge, the solid mantle in the asthenosphere rises toward the surface and begins to melt due to decompression.
This process is primarily driven by a decrease in pressure as the plates move apart. As the mantle rises, the reduction in pressure allows it to undergo decompression melting, which occurs because the mantle rock contains volatile substances (such as water) that can form magma when pressure is reduced.
The addition of heat does play a role in the overall temperature of the asthenosphere, but decompression melting is the dominant process responsible for creating magma at mid-ocean ridges.
The heat in the asthenosphere is generally relatively constant, with the major factor causing melting being the reduction in pressure as the mantle material rises closer to the surface.
This results in the formation of molten rock or magma, which can eventually erupt as material at the mid-ocean ridges, creating new oceanic crust.
As tectonic plates move apart at mid-ocean ridges, there is a decrease in pressure on the mantle material beneath. The solid mantle rock in the asthenosphere begins to rise towards the surface. It's important to note that this rising occurs primarily due to the reduction in pressure, not because of an intense increase in temperature.
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At an astronomical conference, an astronomer gives a report on a star that has recently begun to interest astronomers because of hints that it may have a planet around it. In his report the astronomer gives the average speed with which this star is moving away from the Sun. How did the astronomer measure this speed?
By looking at the Doppler shift in the lines of the star's spectrum. T/F
Answer:
True
Explanation:
Hello!
Doppler spectroscopy is a measurement system used to estimate the radial velocity of a star.
To make this measurement, a series of observations are made on the spectrum of light emitted by a star. Then, it is detected if the characteristic wavelengths of the light spectrum vary, which may indicate that the radial velocity of the star varies. This situation can be caused by the presence of planets in the orbit of that star.
If a planet is found, it can determine its mass by studying the combinations in the radial velocity of the star.
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The boundary where two plates meet and trenches are formed is called
The boundary where two plates meet and trenches are formed is called a convergent boundary or a subduction zone.
What is boundary where two plates meet and trenches are formed is called?A convergent boundary is a type of tectonic plate boundary where two plates come together and collide. There are three main types of convergent boundaries: oceanic-continental convergence, oceanic-oceanic convergence, and continental-continental convergence.
In an oceanic-continental convergence, an oceanic plate and a continental plate converge. The denser oceanic plate subducts or sinks beneath the less dense continental plate. .
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True or false plants in a high latitude receive less direct solar energy during the year than plants at a lower latitude because they are farther from the equator
True. Plants in higher latitudes receive less direct solar energy throughout the year due to the curvature of the Earth and the angle at which sunlight reaches the surface.
Do plants in a high latitude receive less direct solar energy during the year than plants at a lower latitude because they are farther from the equatorAs you move towards higher latitudes from the equator, the angle at which sunlight reaches the Earth's surface becomes more oblique. This causes the same amount of solar energy to be spread over a larger area, leading to lower intensity of sunlight.
This is why plants in high latitudes receive less direct solar energy over the course of the year compared to plants closer to the equator.
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The sum total of the planet's living organisms and abiotic systems is ________.
a. the biosphere
b. an ecotone
c. the biomass
d. a biome
Answer:
a. the biosphere
Explanation:
The biosphere consists of both the living organisms and the non living(abiotic) system which they live in.
The GAIA spacecraft is capable of measuring parallax angles as small as about 0.00002 arcseconds (20 microarcseconds). Based on this fact, GAIA should in principle be able to measure the distances of stars located __________.
Answer:
It will be able to measure the distances of stars located across the Milky Way galaxy and outside it up to a distance of 50 Kiloparsec.
Explanation:
1 arcsecond is 1/parsec.
0.00002 arcsecond is 1/0.00002 parsec = 50,000 parsecs or 50 Kiloparsecs.
The shortest distance to the edge of the Milky Way is about 8 Kiloparsec and the farthest is about 24 Kiloparsec. So at this parallax angle, it can measure the distances of stars across the Milky Way galaxy. Any stars within a distance of 50 Kpc will be measured by GAIA. However, since the closest galaxy to the Milky Way is about 770 Kpc away, GAIA will be unable to measure any stars in another galaxy.
Final answer:
The GAIA spacecraft can accurately measure parallax angles as small as 20 microarcseconds, enabling measurement of stellar distances up to about 30,000 light-years away, far beyond the 300 light-year capability of its predecessor Hipparcos.
Explanation:
The GAIA spacecraft is an exceptional tool for measuring parallax angles to an incredible precision of about 20 microarcseconds, far exceeding the capabilities of its predecessor, Hipparcos. Given this precision, GAIA can measure the distances of stars much farther than ground-based observations could previously achieve. In particular, with an accuracy of a few microarcseconds, GAIA extends our ability to accurately measure stellar distances up to about 30,000 light-years away, covering nearly a third of the galactic disk. This is significantly further than the approximately 300 light-year extent possible with Hipparcos, illustrating GAIA's remarkable improvement in the field of astrometry.
Undulations in the upper (higher elevation)air of the Westerlies are called jet stream disturbances, or _________, and are responsible for bringing variable warm & cold temperatures to mid-latitude (45 degrees and thereabouts) landmasses.
Answer:
Rossby waves
Explanation:
Rossby waves are upper-air waves troposhpere they usually have a wavelengths of range from 4000-6000. Rossby waves are large body of air with fairly uniform charactersitics of temperature and moisture.
What was the main reason Wegener’s continental drift hypothesis was rejected? He could provide only illogical explanations for the movement of the continents. He was not well respected by other scientists. His evidence was incorrect. He could not provide a wholly acceptable explanation for the movement of the continents.
Wegener could not provide a wholly acceptable explanation for the movement of the continents.
Explanation:
Alfred Wegener is the person that developed and promoted the continental drift theory. Despite him having developed the basic idea behind the process, as well as managing to find several clues to support it, his ideas were not accepted by the other scientists and he found it extremely hard to gain support. The main reason as to why this was the case was that he didn't really had wholly acceptable explanation about the movement of the continents.
Everything that Wegener provided as evidence was correct, and it was proving a point. The problem was that he still lacked explanation for the driving force of this process, nor did he had any proof about it, and that was the basis for all other things. Every clue that he had was the final product, but no one could explain as to how that actually happened.
Some of Wegener's evidence were:
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Wegener's continental drift hypothesis was rejected mainly because he could not provide a satisfactory explanation for how the continents moved. His suggestion that continents moved over time was unprecedented and lacked the support of a convincing underlying mechanism.
Explanation:The primary reason Wegener's continental drift hypothesis was rejected was that he could not provide a wholly acceptable explanation for the movement of the continents. Alfred Wegener, a German meteorologist, proposed the idea of continental drift in 1912, suggesting that continents moved across the surface of the Earth over thousands of years. However, he lacked a convincing mechanism to explain this movement. In Wegener's time, the scientific community did not have the advances of seabed mapping or the concept of sea-floor spreading that would later support the theory of plate tectonics. His proposal was thus met with significant skepticism, as he could not satisfactorily explain how the continents moved.
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The UTM coordinates of point A are 500,000 meters East, 2,000,000 meters North, Zone 17 North. The coordinates of point B are 300,000 meterThe UTM coordinates of point A are 500,000 meters East, 2,000,000 meters North, Zone 17 North. The coordinates of point B are 300,000 meters East, 3,000,000 meters North, Zone 18 North. Which point is associated with the least projection-induced scale error?s East, 3,000,000 meters North, Zone 18 North. Which point is associated with the least projection-induced scale error?
A) Point A
B) Point B
C) The error at both points is 1 part in 2500
Answer:
B
Explanation:
The value of scale error is always zero along the two standard lines that run parallel to the Central Meridian. Both lines are at a distance of 180,000 meters from the Central Meridian, in east and west direction, respectively. As the distance from the standard lines increases, Scale Error also increases. As the Eastern distance of point A is higher than that of point B it has higher scaler error (The scale factor at the central meridian is 0.9996). Hence, point B has least scale error.
Read the article titled "Coastlines: Works in Progress." Using two or three sentences, describe the role of waves in shaping Earth's coastlines. (Site 1)
Answer: Waves through their nonstop action play a role in shaping the earth's coastline. This they achieve by their constant ability to move sands and gravel, breach barriers, build walls and even sculpt bays. As a result, no coastline ever remains the same for long.
Explanation: Coastlines are lines where land meets water. They constantly are changed and reshaped by waves built up by winds far out at sea, which unleash their energy when they break on the shore. They deliver sand and gravel to, move them along and also out of the beach.
This nonstop action means nothing ever stays the same. Breakers gnaw away at cliffs, shift sand to and fro, breach barriers, build walls, sculpt bays etc.
Recognizing the need for organizations to improve the state of people, the planet, and profit simultaneously if they are to achieve sustainable, long-term growth is known as sustainability. social responsibility. the marketing concept. the triple bottom line.
Answer:
Corporate social responsibility (CSR) is the investment that companies voluntarily make to obtain improvements in their social, economic and environmental areas.
From the point of view of the marketing of the company, the investment is made to improve its competitiveness, since its image is strengthened as certain certifications are obtained, which is "sold" by the firm as added value.
The triple balance is the system by which the performance of the company in these areas is valued. Currently, there are numerous CSR evaluation systems, with standards that differ in accordance with the nature of the companies.
Explanation:
Hello!
According to the 1987 Bruntland report, sustainability implies "the satisfaction of current needs without compromising the ability of future generations to meet theirs".
Applied to companies, good performance in CSR seeks to maximize its economic benefit and its environmental responsibility, as well as minimize its negative externalities.
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In the following list of magmas, only one is likely to explode - the others will produce lava flows or spatter to form small cinder cones or ooze out to form lava domes. Which one of the following magmas is most likely to produce an explosive volcanic eruption when it reaches the Earth's surface?
a. A basaltic magma with gas.
b. A basaltic magma without gas.
c. An andesitic magma with gas.
d. A rhyolitic magma without gas.
Answer:
C. An andesitic magma with gas
Explanation:
Andesitic magma are characterised by high gas content allowing them to explode explosively when they reach the surface.
How are seafloor sediments useful in reconstructing past ocean conditions? Choose all that apply. a. Biogenic oozes are composed of organisms that used to live on the seafloor, so their distribution provides information about deep-ocean conditions. b. Siliceous oozes on the seafloor indicate a warm surface ocean directly above the deposits. c. Sediments that accumulate on the seafloor provide information about ocean conditions at the time that the sediment was deposited. d. Calcareous oozes on the seafloor indicate a cool surface ocean directly above the deposits. e. Changes in the composition of the seafloor sediment reflect changes in the depositional environment.
Answer: Options C & E
Explanation:
Option C : Sediments that accumulate on the seafloor provide information about ocean conditions at the time that the sediment was deposited
Option E: changes in the composition of the seafloor sediment reflect changes in the depositional environment
Answer:
Seafloor sediments are useful in reconstructing past ocean conditions by:
c. Sediments that accumulate on the seafloor provide information about ocean conditions at the time that the sediment was deposited.
e. Changes in the composition of the seafloor sediment reflect changes in the depositional environment.
Explanation:
Seafloor sediments are the remainings found in the bottom of the ocean. These can come from organic or inorganic sources. The organic ones are formed from the rest of microorganisms, animals, or plants. While the inorganic can come from the earth, volcanic events, or minerals. Both inorganic and inorganic come from the ocean or the land outside the oceans. Therefore they can be used to explain the ocean conditions as well as the changes in the seafloor.
Who was one of the founders of the location-sharing site Gowalla?
Answer:
One of the founders of Foursquare is Dennis Crowley. The other is Naveen Selvadurai. I know you didn't ask for both but I wanted to give them to you just in case. I hope this helps! (:
Explanation:
Dennis Crowley was one of the founders of the location-sharing site Gowalla.
Gowalla is a social networking application that is based on location. It first opened in 2007 and closed in 2012 before reopening on March 10, 2023. Users can check in at "Spots" in their immediate surroundings using either a specific mobile application or the mobile website. It announced the acquisition of Gowalla on December 2, 2011. Gowalla as a service was discontinued on March 11, 2012. According to Gowalla, another social media site will not be getting any of Gowalla's user data.
Dennis Crowley and Naveen Selvadurai founded it. For their first Gowalla check-in, a user receives a Newbie Badge. It encourages users to form societies in order to promote contact between them.
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Sea stars are broadcast spawners: They release their gametes into the water without courtship. Which of these reproductive isolation mechanisms is most likely affecting sea stars?
a. behavioral isolation or mechanical isolation
b. gametic isolation or temporal isolation
c. habitat isolation
Answer:
b. gametic isolation or temporal isolation
Explanation:
Gametic isolation is a type of prezygotic barrier where the gametes (egg and sperm) come into contact, but no fertilization takes place.
Temporal isolation - separation in time such that reproduction occurs at different times of the day, or season or even years. For example, consider the time of day when Evening primrose or Morning glory flowers. The Western spotted skunk mates late summer, whereas the eastern spotted skunk mates in late winter.
In 2001, scientists announced that they had discovered a species of dinosaur called Albertaceratops nesmoi that they believed to be an ancestor of another better-known dinosaur species. How would scientists have determined that this newly discovered species was related to other known species of dinosaur? A) Scientists made careful observations of behavioral patterns. Eliminate B) The DNA mutation rates for both species was calculated and compared. C) Scientists made a detailed analysis of the fossilized bones of each species. D) The enzyme activity of each species was studied to determine similarities in metabolism.
Answer:
C) Scientists made a detailed analysis of the fossilized bones of each species.
Explanation:
Scientists made a detailed analysis of the fossilized bones of each species. This detailed analysis of the fossilized bones provided scientists with direct physical evidence of the similarity of the two species.
Motion on _________ faults results in a fault scarp?
Answer:
Reverse fault, Dip-Slip fault, Normal fault, Thrust fault
Explanation:
A Fault scarp is usually defined as a step-like feature that occurs on the ground surface, depicting the movement of one block upward relative to the other, along a fault line.
It is caused by the following types of faults, namely:
Reverse fault Dip-Slip fault Normal fault Thrust faultThe reverse and the thrust faults are formed due to the compressional stress acting on it from both sides, resulting in the movement of the blocks along the fault line creating a fault scarp.
Similarly, the normal fault and the Dip-slip fault also generates a fault scarp, where the fault is formed because of the extension of the crust.
Answer:Normal fault
Explanation:
Which events occur after Earth’s surface experiences weathering? Check all that apply. a. Sediments settle, forming a hill. b. Wind carries sediments to a new location. c. Sediments fall from the air to the ground. d. Moving water breaks sediments into pieces. e. Surface materials wear down into sediment.
Answer:
A, B, C
Explanation:
After the earth surface experience weathering, sediments are carried by the wind to new locations and these sediments fall from the sky and settle forming hills.
Answer:
Sediments settle, forming a hill.
Wind carries sediments to a new location.
Sediments fall from the air to the ground.
In what ways did networks of interaction in the Western Hemisphere differ from those in the Eastern Hemisphere?
Coquina is a rock made of small pieces of broken shells. Ocean waves break seashells into smaller pieces. Over time, these pieces are moved and deposited. When they stick together, they form coquina. Coquina is most likely a(n) ________.a. igneous rockb. metamorphic rockc. sedimentary rock
Answer:
Option (C)
Explanation:
Coquina is usually defined as a sedimentary limestone rock that is found to be present in the freshwater zones and in the coastal areas. This rock is made up of broken shells that are smaller in size. The rocks can be easily broken down by the constant flowing of sea waves.
This rock is commonly formed in the same way as the other sedimentary rocks, i.e. it is formed by the deposition of sediments carrying these organic remains and eventually undergoes the process of compaction and lithification on the seafloor.
Thus, the correct answer is option (C).
The correct statement is that Coquina rock is a form of a sedimentary rock. So, the correct option matching the statement above is C.
Coquina rock is basically formed of chemical compositions and living organisms, which are mostly formed near marine bio-diversities and marine conditions.
Sedimentary rocks Sedimentary rocks refer to such rocks which are formed due to the deposition of multiple layer of mineral or dead organisms on the surface of the Earth. As it is known that Coquina is formed by the deposition of seashells near the oceans, it can be said that coquina rocks are also a form of sedimentary rocks.Hence, the correct option is C, that Coquina rocks are a form of sedimentary rock. A reference image of coquina rock is attached below.
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The age of our solar system is about: 1. one-third of the age of the universe.2. three-fourths of the age of the universe. 3. two billion years less than the age of the universe.
Answer:
1. one-third of the age of the universe
Explanation:
The solar system is about 4.571 billion years old whole the universe is about 13 billion plus.
The age of our solar system is around 4.6 billion years, roughly one-third of the estimated age of the universe.
Explanation:The age of our solar system is estimated to be around 4.6 billion years, which is approximately one-third of the estimated age of the universe at 13.8 billion years. This means that the solar system is significantly younger than the universe. While it can be difficult to grasp these vast time scales, we know these age estimates through several types of scientific evidence such as radiometric dating of rocks and the study of the oldest known celestial bodies.
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The volcanic landforms at divergent ocean plate boundaries are _____. A. volcanic island arcs B. ocean trenches C. continental volcanic arcs D. oceanic ridges
D.
The volcanic landforms at divergent ocean plate boundaries are _oceanic ridges____.
Explanation:
As two tectonic plates move away from each, they leave a vacuum in between the two plates. This vacuum is filled by upwelling magma from the mantle. As the upwelling magma cools it forms a mountainous ridge along the boundary – because the magma cools rapidly before it could spread further out on the surface. Examples of these landforms are the Mid-Atlantic Ridge and the East Pacific Rise located at divergent tectonic boundaries.
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Answer: The answer to your questions is D. oceanic ridges I hope this helps :)
_____ occurs at convergent boundaries, where one layer of crust sinks into the asthenosphere when it collides with another layer of crust.
A. Divergence
B. Weathering
C. Sublimation
D. Subduction
Answer: Subduction
Explanation:
Because it was in the lesson
Answer:
Option (D)
Explanation:
Two plates move towards one another in the case of a convergent plate boundary. Due to this, a subduction zone is created, where the heavier crust sinks below the lighter one. This zone of subduction is commonly identified by the presence of a narrow V-shaped depression known as deep-sea trench.
As the subducting denser plate reaches the layer of the asthenosphere, the rocks undergo partial melting, and the melt produced from it mixes with the magma. This magma eventually moves upwards to reach the surface in the over-riding plate giving rise to the formation of volcanoes.
The subduction zone and the oceanic trench are two of the common features present in the convergent plate boundary.
Thus, the correct answer is option (D).
Earthquakes, volcanoes, and landslides can displace large volumes of water in the ocean and trigger which of the following natural disasters? a. Mass wasting b. Tsunamis c. Lahars d. Tornadoes
Answer: B Tsunamis
Explanation: tsunami is generated by displacement of large volume of water which the causes of the displacement can be earthquake, volcanoes, landslide and other underwater explosion. Tsunami is refered to as tidal waves
Since we know the difference in height between these two locations, using the atmospheric lapse rate equation provided above, predict the temperature difference between the two locations. (Pay attention to units!. Round to 2 decimal places)
Answer: a) Difference between the two mean temperatures = 16°C
b) The temperature difference between the two locations, according to the lapse rate equation is 23.45°C
c) The true temperature difference is lower than that predicted by the temperature lapse rate formula.
Explanation: a) Difference between the two mean temperatures = 25 - 9 = 16°C
b) The environmental lapse rate (ELR), is the rate of decrease of temperature with altitude in the stationary atmosphere at a given time and location.
The atmospheric temperature lapse rate as defined by the International Civil Aviation Organization (ICAO) for an International Standard Atmosphere is = 6.5°C/km
For this question, distance between the two points is 3613 m = 3.613 km
Temperature difference = 6.5°C/km × 3.613km = 23.45°C.
c) The true difference, 16°C, is less than the predicted difference, 23.45°C.
QED!
Which of these hypothetical observations (none of them are real) would force us to reconsider our modern, Sun-centered view of the solar system?
A) We discover that the universe is actually contracting, not expanding.
B) We discover a small planet beyond Saturn that rises in the west and sets in the east each day.
C) We find that we are unable to measure any parallax for a distant galaxy.
D) We discover an Earth-sized planet orbiting the Sun beyond the orbit of Pluto.
Answer:
B.we discovers small planet beyond Saturn that rises in the west and sets in the east each day
Explanation:
If our earth rotates from west to east then all other heavenly bodies should rotate from east to west in our sky,so if saturn rotates in the opposite direction in the sky it poses a challenge in our believe of earth as a rotating planet
If a single disturbance at an unknown distance emits both transverse and longitudinal waves that travel with distinctly different speeds in the medium, such as in the ground during an earthquake, how can the distance to the disturbance be determined?
Answer:
Explanation:
If the differences in the time of arrival of each wave is measured, the distance can be calculated. The more the difference in their time of arrival, the more the distance and this distance can be in any direction. If distance is used as the radius on the circle that will mean that the disturbance must have taken place on the circle.
If you place a telephone call to two people with similar measurements about this same event at different places, then their circles can be transfered to your own map, the point of intersection of this 3 circles is the location of disturbance.
Final answer:
To calculate the distance to the source of an earthquake, seismographs use the time difference between the arrival of P-waves and S-waves. The distance can be precisely determined given the speeds of these waves and the precision of timing measurement. Uncertainties in the wave speeds can affect the accuracy of this distance calculation.
Explanation:
To determine the distance to the disturbance, such as the epicenter of an earthquake, seismographs measure the arrival times of P-waves and S-waves with a high precision. Because these waves travel at different speeds through the medium, the time difference in their arrival can be used to calculate the distance to the source of the earthquake.
The formula for the distance D to the earthquake's epicenter is based on the measured time difference
Dt between the arrival of the P-waves and S-waves and their respective speeds Vp for P-waves and Vs for S-waves:
D = Vp * (Dt) / (1 - Vs/Vp)
Given the precision of time measurements (0.100 s) and the known speeds of P-waves (7.20 km/s) and S-waves (4.00 km/s), one can solve for D to find the distance to the epicenter with a certain level of precision. However, any uncertainties in the speeds of the seismic waves would contribute to a greater uncertainty in the determined distance.
In practical terms, this difference in arrival times provides a way to triangulate the location of an earthquake's epicenter or the site of underground nuclear detonations, which is crucial for geological studies and for monitoring compliance with test ban treaties.
How far north you live from the equator is measured as your ________, whereas an imaginary line marking all those places at that same distance north of the equator is called a ________.
Answer:
LATITUDES AND PARALLEL
Explanation:
Latitudes are the lines that are oriented in the east-west direction and are measured from the equator moving towards both the poles. It ranges from 0° to 90°, where 0° refers to the equator and 90° refers to both the poles on either side. This latitude together with the value of longitude gives the exact coordinates of a location on earth.
Parallels are the imaginary lines joining all the places lying on the same latitude. These are the lines oriented in the east-west direction. These lines are extended in both the hemisphere, maintaining a fixed distance from the equator.
The distance north you live from the equator is measured as your latitude, while the imaginary line running east-west at that same distance north from the equator is called a parallel.
Explanation:How far north you live from the equator is measured as your latitude, whereas an imaginary line marking all those places at that same distance north of the equator is called a parallel. Latitude is a geographical coordinate that specifies the north-south position of a point on the Earth's surface. It ranges from 0 degrees at the equator to 90 at the poles. On the other hand, parallels are imaginary lines running east-west around the globe, parallel to the equator, that indicate latitude.
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What is the graticule? a. another name for a map projection b. the name given to Earth’s latitude lines c. another name for a globe the name given to Earth’s longitude lines d. a name given to the system of lines used to locate points on Earth’s surface
Answer:
I would say D. a name given to the system of lines used to locate points on earths surface
Explanation:
A quick google search of a graticule explained that it is a network of lines representing meridians and parallels on which a map or plan can be represented.
The graticule is a name given to the system of lines used to locate points on Earth’s surface. It consists of latitude lines (parallels) and longitude lines (meridians). The graticule is important for navigation and determining coordinates.
Explanation:The graticule is a name given to the system of lines used to locate points on Earth’s surface. It consists of the latitude lines (also known as parallels) which run horizontally around the Earth and the longitude lines (also known as meridians) which run vertically from the North to the South pole. The graticule is an important tool for navigation and determining the coordinates of specific locations on the Earth.
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Which of the following headlines from possible news stories relate(s) to Earth Science?
Choose one or more:
a. Ancient artifacts found in Mayan Temple reveal what life was like for the wealthy Mayans
b. EPA under the microscope after 2015 Colorado Gold King Mine spill
c. Scientists search genome to make cancer treatments more effective
d. NASA prepares for launch of James Webb telescope, which will give us new insights into outer space
e. New Ebola vaccine shows promising results in human clinical trials
Final answer:
The headline pertaining to Earth Science is about the EPA's scrutiny after the 2015 Colorado Gold King Mine spill, which deals with environmental impact and regulation.
Explanation:
The headline that relates to Earth Science is:
b. EPA under the microscope after 2015 Colorado Gold King Mine spillThis headline indicates an environmental issue that falls under Earth Science, specifically related to the impact of human activities on the environment, which is a concern for the Environmental Protection Agency (EPA). Such an event relates to the study of how pollutants affect ecosystems, the soil and water quality, and environmental health and regulations.
When a metamorphic rock exhibits a layered or banded appearance, it is said to exhibit a(n) __________ texture.
Answer:
Explanation:
When a metamorphic rock exhibits a layered or banded appearance, it is said to exhibit a foliated texture.
In geology, foliation texture is a texture that has layerings in a repititive manner, usually in metamorphic rocks. Each layer vary in thickness. It can be as thin as 0.05cm or more than a meter in thickness.