Which four statements are true regarding the San Andreas Fault?
A. The San Andreas Fault is located in California.
B. Some segments of the fault have a slow, gradual movement resulting in little noticeable seismic activity.
C. Stick-slip motion along the fault produces the largest earthquakes.
D. Movement along the fault is occurring at a rate of about 1 or 2 inches a day.
E. The earthquake activity around Parkfield has been very regular since the mid 1800’s.

Which two statements below regarding moment magnitude are true?
A. Moment magnitude is the most accurate way of measuring small earthquakes.
B. Moment magnitude is never as accurate as Richter magnitude.
C. Moment magnitude can be verified by two independent methods.
D. Moment magnitude can be calculated using very long seismic waves.
E. The largest moment magnitude ever identified was a 8.5.

Which three statements are true regarding the Earth’s interior?
A. The core of the earth is iron-rich.
B. The outer core is hotter than the inner core.
C. The mantle comprises the largest portion of the earth.
D. Lower mantle rocks are very hot and capable of very gradual flow.
E. The asthenosphere is a very soft layer in the core.

Which three statements are true regarding earthquakes?
A. Most earthquakes happen along faults.
B. Earthquakes are vibrations of Earth produced by the slow release of energy.
C. Earthquakes are quite rare, occuring only several times a year.
D. Energy from an earthquake radiates out in all directions.
E. The epicenter is located on the surface directly above the focus.

Multiple Answer
Which three statements below are true regarding a tsunami?
A. Tsunami are just really big tidal waves.
B. Most tsunami result from displacement of the seafloor at an underwater fault zone.
C. Tsunami are hard to detect in the open ocean due to their slow speed.
D. A possible warning of a tsunami is the rapid withdrawal of water from beaches.
E. A tsunami slows and gain height as it nears land.

How many 5.o earthquakes would it take to release the same amount of energy as one 8.0 earthquake?

A. 32
B. 1,000
C. 32,000
D. 1,000,000
E. 32,000,000

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Explain how seismic waves (PRIMARY AND SECONDARY!) help to indicate the location and existence of the layers of the earth? HELP!

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seismic waves map the earth’s interior?

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An earthquake occurs a distance of 20km from you. If you feel the shaking at precisely 10:30am and seismic waves travel at a speed of 5km/s, how much later does someone who is 60km feel the shaking?

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What causes seismic waves to slow down at about 100-200 km depth? What happens at around 400 km depth? At 670 km depth?

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How does Earth’s solid inner core affect seismic waves?

A. They go faster through the inner core than the liquid outer core.
B. They go slower through the inner core than the liquid outer core.
C. It blocks S waves from passing through.
D. It blocks P waves from passing through.

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So we have a project about Earthquake Waves (seismic waves), and I’m making a powerpoint for it. Some of the information was easy to find and in the book, and I’m already done with that portion of the project. But now I’m onto the last part, which isn’t in the book nor was taught by my teacher, and I can’t find it anywhere. It is:

Earth’s Interior
– Explain how earthquake waves are used to make a model of Earth’s interior.
– Include atleast two pictures

The book doesn’t talk about making models by using earthquake waves. Please help!

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Please help me answer this question.

Seismic waves reveal the structure of Earth’s interior through their ______ and _______.

The answer is not in my book. So I ask of you to please answer this. Thank you.

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Describe in your own words how seismic waves help in studying Earth’s interior.

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What do the seismic waves have in common?

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