Volcanoes

What happens when magma reaches the Earth's surface?

• It freezes

• It becomes lava

• It disappears

• It turns into a mountain

What is a volcano?

• A type of cloud

• A mountain with snow

• An opening in the Earth's crust

• A large body of water

What does it mean if a volcano is dormant?

• It is very active

• It is extinct

• It is sleeping

• It is a new volcano

What is a shield volcano?

• A volcano shaped like a shield

• A very small volcano

• A volcano with steep sides

• A large volcano with gentle slopes

What is unique about the Parícutin volcano?

• Scientists observed its formation

• It is on the moon

• It erupted underwater

• It is the largest volcano

What are stratovolcanoes known for?

• Producing a lot of water

• Violent eruptions

• Being very small

• Gentle eruptions

What happened in 1980 at Mount St. Helens?

• It became dormant

• Nothing significant

• A massive eruption occurred

• It turned into a shield volcano

How many potentially active volcanoes are there worldwide?

• Over 2000

• Exactly 100

• About 150

• Nearly 1500

What is the Ring of Fire?

• A type of volcano

• A circle of volcanoes in the Pacific Ocean

• A celebration in some countries

• A famous movie

What could happen with the magma under Yellowstone National Park?

• It could form a supervolcano

• It could turn into diamonds

• It might never erupt

• It will create a new ocean