Question

Why do the waves have different speeds in different layers of Earth's surface?

A Earth's different layers contain materials with different energy-transfer properties.
B Earth's different layers already move at different speeds because of Earth's rotation
O c Waves increase in speed as they move away from their source, so they move faster in deeper layers.
D. Waves gain heat energy by traveling through each layer, and the heat is transformed to kinetic energy.

Answer 1

Material's density

Step-by-step explanation:

Seismic waves travel at different rates of speed based on a material's density. Hopefully, you understand that the Earth has three main layers: the crust, mantle, and core. Earthquake waves move faster through solids.