question #4 what happens when a wave created by an earthquake passes from the crust to the mantle? a the…

question #4 what happens when a wave created by an earthquake passes from the crust to the mantle? a the wave changes speed. b the wave reverses direction. c the wave increases in energy. d the wave stops moving.
Answer
Brief Explanations:
Seismic waves change speed when moving from one medium (crust) to another (mantle) due to differences in density and elasticity of the materials. They don't reverse direction, increase in energy without an external source, or stop moving just by transitioning from crust to mantle.
Answer:
A. The wave changes speed.