T6L1-Flashcard: Seismic Waves & Earth’s Layers

Front

What is the outermost layer of the Earth called?

Back

Crust

Front

Which layer of the Earth is the thickest?

Back

Mantle

Front

Which layer of the Earth is solid and made mostly of iron and nickel?

Back

Inner Core

Front

What type of waves are produced by earthquakes and travel through Earth?

Back

Seismic Waves

Front

Which Earth layer is made of liquid iron and nickel?

Back

Outer Core

Front

What happens to seismic waves when they travel through different layers of Earth?

Back

They slow down or speed up

Front

Which layer of the Earth do seismic waves travel through first during an earthquake?

Back

Crust

Front

The movement of material in which layer is responsible for Earth’s tectonic plate movement?

Back

Mantle

Front

Which type of seismic wave can travel through both solids and liquids?

Back

P-waves

Front

What is the main cause of earthquakes?

Back

The shifting of rocks along a fault line