Asked by yo
How do geologists study direct evidence of Earth’s interior?
by collecting drill core samples of Earth’s crust
by measuring seismic wave activity
by analyzing how living things survive
by recording changes in climate patterns
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by measuring seismic wave activity
Seismic waves from earthquakes (and man-made sources) travel through Earth and change speed and direction at layer boundaries. Geologists analyze those wave patterns to infer the size, composition, and state (solid or liquid) of Earth's internal layers. (Drill cores give direct samples but only from the crust, so they can't reveal the deep interior.)
Seismic waves from earthquakes (and man-made sources) travel through Earth and change speed and direction at layer boundaries. Geologists analyze those wave patterns to infer the size, composition, and state (solid or liquid) of Earth's internal layers. (Drill cores give direct samples but only from the crust, so they can't reveal the deep interior.)
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