Answers
Answer:
The question is incomplete. This is the complete question: Use the following information to answer the exercise: The table in the attachment contains data on hurricanes that have made direct hits on the US between 1851 and 2004. A hurricane is given a strength category rating based on the minimum wind speed generated by the storm. What is the relative frequency of direct hits that were AT MOST a category 3 storm.
The answer is b. 0.9231.
Explanation:
The relative frequency for each category can be calculated by dividing the number of hits for each category by the total number of hits, where the total number of his = 273.
The relative frequency for each category is shown in the third column in the table in the attachment.
Using the values of the respective relative frequencies on the third column, and considering AT MOST a category 3 storm―i.e. categories 1, 2, and 3―the relative frequency of direct hits = relative frequency for category 1 + relative frequency for category 2 + relative frequency for category 3 = (109/273) + (72/273) + (71/273) = 0.3993 + 0.2637 + 0.2601 = 0.9231.
The relative frequency of direct hits that were AT MOST a category 3 storm is 0.3480. The correct option is A.
Explanation:The relative frequency of direct hits that were AT MOST a category 3 storm can be calculated by dividing the number of direct hits that were at most a category 3 storm by the total number of direct hits. Let's assume there were 120 direct hits in total and 42 of them were at most category 3 storms. The relative frequency would be:
Relative frequency = Number of direct hits at most category 3 / Total number of direct hitsRelative frequency = 42 / 120Relative frequency ≈ 0.35So, the answer is 0.3480 (option a).
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Related Questions
Why was Wegener’s idea of ""continental displacement"" not widely accepted at first? What did it lack?
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Answer:
According to Wegener, all the continents were all one lumped together into one large land mass before they started drifting apart over time over the oceanic bed.
At first, the idea was highly criticized because he never explained "how" they drifted apart, as in what caused the motion, what was behind the drifting. I hope you understand.
Distinguish between regional and contact metamorphism. a. Contact metamorphism occurs when chemically active fluids flow through a large region of preexisting rock; regional metamorphism occurs when large quantities of rock are subjected to high heat and pressure during mountain building. b. Regional metamorphism occurs when magma intrudes existing rock and heats it enough to cause metamorphic changes; contact metamorphism occurs when large quantities of rock are subjected to high heat and pressure during mountain building. c. Contact metamorphism occurs when magma intrudes existing rock and heats it enough to cause metamorphic changes; regional metamorphism occurs when large quantities of rock are subjected to high heat and pressure during mountain building. d. Regional metamorphism and contact metamorphism both occur when quantities of rock are subjected to high heat and pressure during mountain building, but regional metamorphism affects over a greater area. e. Regional metamorphism occurs when chemically active fluids flow through a large region of preexisting rock; contact metamorphism occurs when magma intrudes existing rock and heats it enough to cause metamorphic changes.
Answers
Answer:
Option c
Explanation:
Regional metamorphisim occurs as a result of tectonic activity and is characterized with low temp and high pressure conditions over a large area while contact metamorphism occurs intrudes existing rocks.
Contact metamorphism is a localized process that involves rock alteration due to intrusion of magma, impacting a relatively small area. On the contrary, regional metamorphism is a large-scale process that transforms rock over a wide area due to tectonic activity and is associated with phenomena like mountain building.
Explanation:The difference between regional and contact metamorphism is due to the conditions under which they occur and the extent of their influence. Contact metamorphism occurs when magma intrudes into the surrounding solid rock body, causing a high gradation of heat and altering the existing rock. This process typically affects a relatively small area surrounding the intrusion.
On the other hand, regional metamorphism involves the transformation of large volumes of rock over a wide geographic area, primarily due to the intense heat and pressure associated with tectonic processes such as mountain building. Therefore, the main difference lies in the scale and conditions of the metamorphism process.
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Calculate how many meters of distance are equivalent to 11,700 years, using the metaphor-conversion-factor of 1,000,000 years per kilometer. In other words, if 1,000 meters = 1,000,000 years, how many meters is 11,700 years?
Answers
Answer:
11.7 meters
Explanation:
If
[tex]1000m=1,000,000years,[/tex]
let the unknown meters = [tex]x[/tex]
[tex]x[/tex]meters [tex]=11,700 years[/tex]
∴
[tex]1000 * 11,700 = 1,000,000x[/tex]
[tex]11,700,000[/tex] = [tex]1,000,000x[/tex]
Divide both sides by 1,000,000
[tex]\frac{11,700,00}{1,000,000} = \frac{1,000,000x}{1,000,000}[/tex]
[tex]x =[/tex] 11.7 meters
To convert 11,700 years to meters, we need to first convert it to kilometers using the given conversion factor. Then, we can convert kilometers to meters using the conversion factor provided.
Explanation:To calculate how many meters are equivalent to 11,700 years using the given metaphor-conversion-factor, we need to use the conversion factor of 1,000 meters per 1 kilometer.
First, we will convert the given 11,700 years into kilometers by dividing it by the conversion factor of 1,000,000 years per kilometer. This gives us 0.0117 kilometers.
Next, to convert kilometers to meters, we'll multiply 0.0117 kilometers by the conversion factor of 1,000 meters per 1 kilometer. This gives us 11.7 meters.
Earthquakes in California are Choose one: A. typically due to stick-slip behavior along the San Andreas fault. B. always less than magnitude 6.5. C. the result of reverse faulting along the San Andreas fault. D. the result of rifting along the San Andreas fault.
Answers
Answer:D
Explanation:
A plausible magnitude 7.8 earthquake on the San Andreas fault could bring wide spread severe, violent and extreme shaking.
With increasing distance from an oceanic ridge, the rocks become older. the rocks become younger. the rocks' ages alternate between younger and older. All of the choices; different patterns occur at different ridges.A. TrueB. False
Answers
Answer:
Option (1)
False
Explanation:
The mid-oceanic ridge is one of the main features in the divergent plate boundary. Seafloor spreading takes place along this ridge, where the lithosphere becomes thin because of the uprising magma. The magma erupts at the surface forming a ridge which is commonly known as the mid-oceanic ridge.
As the magma melts at this ridge due to the decompression process, it solidifies and forms young basaltic igneous rocks. These are geologically the youngest rocks. With the increasing distance right from the mid-oceanic ridge, the age of the rocks increases.
Thus, the correct answer is option (1).
At this mid-oceanic ridge, when the magma erupts at the seafloor, it is comprised of magnetic minerals, which shows a specific pattern in the orientation of the earth's magnetic polarity. This forms alternate stripes, that starts from the mid-oceanic ridge and eventually expand outward. This pattern of earth's magnetic polarity is found in all the mid-oceanic ridges on earth.
Hence the given statement is false.
Rocks do get older the further you get from an oceanic ridge, due to seafloor spreading and the process of new rock formation at these rift zones, where tectonic activity is most prevalent. This creates a pattern in which the youngest rocks are found closest to the ridge, and the age increases with distance.
Explanation:The statement in the question, 'With increasing distance from an oceanic ridge, the rocks become older.' is true. This pattern is a consequence of seafloor spreading at mid-ocean ridges, which are active rift zones. As tectonic plates pull apart, magma rises to the seafloor, cools, and solidifies to form new rock. Over time, this process pushes older rock further away from the ridge as new rock forms. Plate tectonics and volcanic forces form new terrains and contribute to this cycle, leading to an observable pattern where the age of rocks increases the further you move from the ridge.
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What type of coastal management mechanism does Dr. Pilkey believe should be introduced in the long-term?
Answers
Answer:
The type of coastal management mechanism that Dr. Pilkey believes should be introduced in the long-term is the beachfront mechanism.
Explanation:
According to Dr. Pilkey, it would be crucial to bring in the local residents of coastal areas in the operations of coastal management so as to cease the activities that cause coastal erosion. He believed for the long-term conversation of coasts, the locals can be trained to implement the beachfront mechanism make the locals take care of their own beaches.