9.3 - 9.4 Review

Which type of volcano has broad bases and gently sloping sides?

• Shield volcano
• Cinder cone
• Composite volcano
• Caldera

What type of volcano forms when molten lava is thrown into the air from a vent?

• Shield volcano
• Cinder cone
• Composite volcano
• Caldera

What are composite volcanoes made up of?

• Layers of materials from explosive eruptions
• Basaltic lava flows
• Pyroclastic materials only
• Magma released from a volcano

What is a lahar?

• A type of lava flow
• A type of volcanic vent
• A fast-moving mudflow caused by volcanic activity
• A type of volcanic rock

What is a caldera?

• A type of volcanic vent
• A fast-moving mudflow caused by volcanic activity
• A crater-shaped basin formed when the top of a volcano collapses
• A type of volcanic rock

What event can result in the formation of a lava plateau?

• Basaltic lava pouring from a fissure
• A volcanic eruption
• The collapse of a volcano's summit
• The accumulation of pyroclastic materials

What are the dark areas on the moon called and what did early astronomers think they were?

• Basaltic flows; seas
• Maria; mountains
• Basaltic flows; mountains
• Maria; seas

What is the largest known volcano in the solar system?

• Olympus Mons
• Pillan Patera
• Io
• Maria

How does the size of Olympus Mons on Mars suggest that Mars does not have moving plates?

• It is located in a hot spot.
• It is the only volcano on Mars.
• It is taller than other volcanoes on Mars.
• It would have moved away from the hot spot if Mars had moving plates.

How do scientists believe the volcanic activity on Mars is powered?

• Radioactive activity beneath the surface
• Moving plates
• Gravitational tug of war
• Friction from the moon's surface