Much of what we know about the internal structure and composition of Earth has come from the study of ____.
A)satellite imagery
B)seismic waves
C)volcanic eruptions
D)Mars
E)deep-ocean sediments

Question

Much of what we know about the internal structure and composition of Earth has come from the study of ____. ​
A)satellite imagery
B)seismic waves
C)volcanic eruptions
D)Mars
E)deep-ocean sediments

Quizplus · Accepted Answer

Seismic waves, generated by earthquakes, travel through Earth's interior and are recorded by seismographs. Variations in the speed and direction of these waves as they travel through different materials provide information about the structure and composition of Earth's interior.

Much of What We Know About the Internal Structure and Composition