Volcanoes, Earthquakes and Mountains

How do fold mountain form?

• Land on one side of a fault is raised, while the other side drops downward.
• When magma rises toward the surface but doesn't break through the crust.
• From a fiery explosion.
• When plates collide, causing the crust to fold and crumple.

What is the point underground where the earthquake begins.

• Epicenter
• Breaking Point
• Focus
• Ground Zero

What is used to measure the magnitude of an earthquake?

• A digital scale
• A Richter Scale
• A bathroom scale
• A dichotomous scale

What can cause a tsunami?

• An earthquake

• An underwater landslide
• A volcanic eruption on the ocean floor
• All of the above

What do you call molten rock under the earth's crust?

• melted rock
• magma
• lava
• pumice

What is molten rock after it break through an opening in the Earth's crust?

• Magma
• Melted rock
• Pumice
• Lava

What is a hot spot?

• An area in the interior of a plate where hot magma escapes Earth's crust.
• An area where you can get wireless internet.
• A place on your skin that burns.
• A popular place to hang out.

What do earthquakes, volcanoes, and mountain building have in common?

• They occur suddenly.
• They are measured by seismographs.
• They result from plate motion.
• They cause major disasters.

In California, earthquakes strike because of plate motion along the:

• coastline of the Pacific Ocean.
• San Andreas Fault.
• Sierra Nevada Mountains.
• Edge of San Francisco Bay.

What factor does NOT affect how much damage results from an earthquake?

• The distance from a hot spot.
• The strength of an earthquake.
• The distance from the epicenter.
• The makeup of the Earth's surface in the quake zone.