Question

The major way in which we learn about Earth's interior is through:

a) Seismic waves
b) Satellite observations
c) Volcano eruptions
d) Ground-penetrating radar

Answer 1

Seismic waves are the major way we learn about Earth's interior. They are generated by earthquakes and provide information about the layers and composition of the Earth's interior.

Step-by-step explanation:

Seismic waves are the major way in which we learn about Earth's interior.

Scientists discovered in the early 1900s that seismic waves generated by earthquakes could be used to help distinguish the properties of the Earth's internal layers.

By monitoring the seismic waves in different locations, scientists can learn about the layers through which the waves have traveled, helping to construct a model of Earth's interior.