Unit 4 Part 2 Test

What is the definition of magma?

• magma is lava that has cooled to form solid rock

• magma is molten rock that flows on Earth's surface

• magma is melted rock found in underground chambers

• magma is any place where gas, ash, or melted rock come out of the ground

What is pyroclastic material?

• Molten rock that flows on Earth's surface

• Hot ash and bits of rock that are ejected from a volcano

• The materials within a mantle plume

• The stuff that only comes out of cinder cones

What happens when stress causes a normal fault?

• The footwall drops down

• The hanging wall moves up

• The walls move side to side

• The hanging wall drops down

During 2003, the number of earthquakes around the world was higher than usual. The map below shows these earthquakes. Where did most of these earthquakes occur?

• In the middle of oceans

• In the middle of continents

• Along the oceans

• Along the Pacific Plate

The figure below shows mountains that formed when two tectonic plates collided. What type of mountain is this an example of?

• Folded

• Eroded

• Volcanic

• Fault Block

The effects of an earthquake depend on many factors, not just the amount of energy released at the focus. Which types of buildings would best withstand the effects of an earthquake?

• taller buildings made of flexible steel or wood

• shorter buildings made of flexible steel or wood

• taller buildings made of brick or concrete

• shorter buildings made of brick or concrete

Volcanic vents are places where magma can erupt onto Earth's surface.Which volcanic feature forms a relatively small depression around the volcano's vent?

• crater

• fissure

• caldera

• lava plateau

Please name what A, B, and C are in the picture of an earthquake.

What is a caldera

What event can occur when a large earthquake happens in an ocean?