Earth Science Unit 3 - Earthquakes

Natural vibrations of the ground caused by the stress and strain of plate movement are called

• earthquakes
• volcanoes
• tremors
• shakes

The first waves to reach a recording station are

• Surface waves
• P waves
• S waves
• horizontal waves

The second waves to reach a reporting station  are called

• S waves
• P waves
• Surface waves
• horizontal waves

The most destruction done by an earthquake are caused by

• P waves
• S waves
• Surface waves
• horizontal waves

Surface waves are

• P and S waves combined
• P waves
• S waves
• horizontal waves

In order to find the epicenter of an earthquake how many reporting stations are needed

• 1
• 2
• 3
• 4

The spot inside of Earth where the earthquake happens is called the

• focus
• epicenter
• fissure
• fracture

The spot on Earth's surface right above where the earthquake occurs is called the

• focus
• epicenter
• fracture
• fissure

P waves move

• with rock
• against rock
• perpendicular to rock
• they don't move rock

S waves move

• with rock
• against rock
• perpendicular to the rock
• they don't move rock