Question

a scientist is studying a shock wave from an earthquake. what kind of wave is being studied?
an electromagnetic wave
a gamma ray
a radio wave
a mechanical wave

Explanation:

• Electromagnetic wave: These waves (like light, gamma rays, radio waves) don't need a medium. Earthquake shock - waves need a medium (solid, liquid, or gas in the Earth's layers).
• Gamma ray: A type of electromagnetic radiation. Not related to earthquake shock - waves.
• Radio wave: Another type of electromagnetic radiation. Not relevant to earthquake shock - waves.
• Mechanical wave: These waves require a medium. Earthquake shock - waves (seismic waves) travel through the Earth's interior (a medium), so they are mechanical waves.

Answer:

a mechanical wave