Answer 2 questions Describe how scientists can use vibrations during earthquakes to figure out if the Earth is made up of liquid or solid deep inside?
&
Describe how you can use earthquake vibrations to prove the inside of the Earth is made of separate layers?

Seismic waves are used alot.

Internal waves from the earth share information with scientists.

Explanation:

Seismic waves are recorded by a machine called a seismograph, which tells us about the strength and speed of the seismic waves. ... Seismic waves travel at different speeds when they pass through different types of material, so by studying seismograms, scientists can learn a lot about Earth's internal structure.

Thinking about the crust, the interior of the Earth cannot be studied by drilling holes to take samples. Instead, scientists map the interior by watching how seismic waves from earthquakes are bent, reflected, sped up, or delayed by the various layers.

answer is b.

explanation: