1/13 Knowledge Check

This is the thinnest of Earth's layers.

• Crust

• Mantle

• Inner Core

• Outer Core

Which of the following describes a P wave?

• Transverse wave

• Slower speed

• Moves through solids only

• Only shakes side to side

Which of the following describes an S wave?

• Moves through solids and liquids

• Slower speed

• Longitudinal wave

• Compression wave

This is the hottest of Earth's layers.

• Crust

• Mantle

• Inner Core

• Outer Core

This type of rock is created under intense heat and pressure.

• Sedimentary

• Metamorphic

• Igneous

• Minerals

How can metamorphic rocks become sediments?

• Melting

• Compaction

• Cementation

• Weathering

How can metamorphic rocks become igneous?

• Compaction

• Melting and cooling

• Weathering

• Heat and pressure

Please explain why S waves do not enter Earth's core.