Earthquakes & Waves Review

Tectonic motion caused tension between plates in Earth’s crust. A sudden release of this energy occurred. Based on this information, which event happened?

• subsidence
• earthquake
• volcanic eruption
• meteoroid impact

The crack along which rocks break and an earthquake occurs is a _____.

• focus
• fault
• epicenter
• hypocenter

A ____ may form when a body of water is forced inland by an earthquake or a volcanic eruption.

• Volcanoe
• Earthquake
• Tsunami
• Hurricane

The focus is a point in the interior of Earth where energy is released causing an earthquake. How do the waves generated at the focus move?

• they stop when they reach the surface
• they die out before reaching the fault
• they become stronger in the atmosphere
• they move out in all directions

The outside layer of the earth is called ______________________.

• core

• crust

• mantle

• outer core

The epicenter of an earthquake is

• The point below the surface where rock begins to break and the first motion occurs
• The seismic station closest to the earthquake
• The place where the greatest damage occurs
• The point on the surface directly above the focus

Where is the point at which the first movement occurs during an earthquake?

• Epicenter
• Focus
• Fault
• Plate

Earthquakes under the water can cause _________________________________.

• tornadoes
• tsunamis
• lightening
• hailstorms

The focus of an earthquake is

• The point (below Earth's surface) where rock breaks

• The closest seismic station

• The place where the greatest damage occurs

• A fault

Earthquakes happen every day. Most are too small for humans to notice.

• True

• False