Volcano Unit Test Study Guide

What is a volcano?

• A type of cloud formation
• A large body of water
• a weak spot in the Earth's crust where magma comes to the surface

• A type of flower

What is the difference between magma and lava?

• Magma and lava are the same thing
• Magma is hotter than lava
• Magma is beneath the Earth's surface, while lava is on the Earth's surface.
• Lava is found in the Earth's mantle, while magma is found in the Earth's core

How do volcanoes relate to plate tectonics?

• Volcanoes are often found at tectonic plate boundaries
• Volcanoes are formed by underground nuclear explosions
• Volcanoes have no relation to plate tectonics
• Volcanoes are caused by meteor impacts

Which types of plate boundaries do volcanoes form at?

• Convergent and divergent plate boundaries
• Subduction plate boundaries
• Mid-ocean ridge plate boundaries
• Transform plate boundaries

How do volcanoes form at divergent boundaries?

• Volcanoes form due to the impact of meteorites

• volcanoes form from the magma that rises through cracks in the crust

• Volcanoes form from the cooling of ocean water
• Volcanoes form as a result of underground nuclear testing

How do volcanoes form at convergent boundaries?

• a plate subducts, water mixes with mantle to form magma, magma rises to surface

• Volcanoes form from the impact of meteorites
• Volcanoes form from the movement of tectonic plates
• Volcanoes form from the cooling of ocean water

What do island arcs form?

• From the subduction of plates

• the plate moves over the mantle and the magma continues to break through in different spots

• Development of mountain ranges
• Volcanic activity and the formation of volcanic islands

What is it called when volcanoes form away from plate boundaries?

• subplate volcanism

• extraplate volcanism
• interplate volcanism
• hot spots

What volcanic feature is at the number 7 spot?

• pyroclastic flow

• vent

• Volcanic crater
• magma chamber

What volcanic feature is at the 6 spot?

• lava flow

• pipe

• pyroclastic flow

• crater