Earthquakes and Volcanoes Assessment

What is an earthquake?

• vibrations in the ground made when the plates slip past each other

• vibrations in the ground made when the continents drift

• vibrations in the ground made when mountains are made

• vibrations in the ground made when the ocean waves crash on shore

Why do earthquakes happen?

• stress builds up as plates are shifted around

• stress builds up as the moon pulls on earth

• stress builds up as the ocean floods

• stress builds up as the continents are pushed

Where do most earthquakes happen?

• along plate boundaries

• along the shorelines of continents

• in the inner core

• in the asthenosphere

What kind of fault is this?

• strike-slip

• reverse

• normal

What kind of fault is this?

• normal fault

• reverse

• strike-slip

What kind of fault is this?

• reverse

• normal

• strike-slip

Energy waves that travel out and away from and earthquake are called

• seismic waves

• stress waves

• elastic deformation

These waves travel the fastest and through solids and liquids.

• P waves

• S waves

• L waves

These waves travel at medium speed and stop when they hit liquids.

• S waves

• P waves

• L waves

These waves travel the slowest and along the surface. They cause the most building and road damage.

• L waves

• S waves

• P waves