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Question
1.why do seismic waves travel faster or slower as they pass through a certain layer?
2.how does the P-wave and S-wave behave as each passes through layers of the earth?
3.what behavior of the body waves give evidence to the presence of discontinuities between the layers?
4.his does the s-wave give evidence that the outer core is liquid?
5.what data gives information on the thickness of the layers of the earth?
Answer #1 for Questions: 1.why do seismic waves travel faster or slower as they pass through a certain layer?
2.how does the P-wave and S-wave behave as each passes through layers of the earth?
3.what behavior of the body waves give evidence to the presence of discontinuities between the layers?
4.his does the s-wave give evidence that the outer core is liquid?
5.what data gives information on the thickness of the layers of the earth?
Answer:
1. Seismic waves travel more quickly through denser materials and therefore generally travel more quickly with depth. Anomalously hot areas slow down seismic waves. … Molten areas within the Earth slow down P waves and stop S waves because their shearing motion cannot be transmitted through a liquid.
2. The speed of P waves and S waves increases as they travel deeper into the Earth’s mantle. They travel through the Earth in curved paths, but they change direction suddenly when they pass through the boundary between substances in different states.
5. Scientists learn about the layers deep within the Earth’s crust by studying how seismic waves travel through the Earth. … By looking at the time of arrival of the main set of waves, and how the frequencies of the waves are arranged within the set, scientists can learn about the density and other properties of the layers.
Explanation:
I can’t find the answer to number 3 and 4. I’m also not sure about number 5. I hope it helps
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