Seismic Waves and Earth's Structure

How deep is the deepest mine on Earth?

• 4 kilometers

• 9 kilometers

• 2.5 kilometers

• 1 kilometer

What is the depth of the deepest hole ever drilled into the Earth?

• 12 kilometers

• 18 kilometers

• 28 kilometers

• 22 kilometers

Which type of seismic wave travels the fastest?

• P waves

• T waves

• S waves

• Surface waves

What do S waves indicate about the Earth's interior?

• It is hollow

• It is entirely liquid

• It is entirely solid

• There are both solid and liquid layers

What causes the P wave shadow zone?

• Absorption by the Earth's core

• Interference with S waves

• Refraction due to density changes

• Reflection of waves