Volcano Quiz

What is a volcano made from?

• Sand and water

• Rock and ash

• Ice and snow

• Soil and plants

What is the molten rock that erupts from a volcano called before it reaches the surface?

• Lava

• Ash

• Magma

• Smoke

Where does the eruption of gases, ash, and molten rock occur in a volcano?

• From the base

• From the sides

• From the top or vents on the sides

• From the middle

What does molten rock become once it erupts from a volcano?

• Magma

• Ash

• Smoke

• Lava

Why does a volcano erupt?

• Because of the buildup of magma in a chamber beneath Earth's surface

• Due to the movement of tectonic plates

• Because of the cooling of Earth's core

• Due to the gravitational pull of the moon

What happens to molten rock when it exits to the surface?

• It becomes magma

• It becomes lava

• It becomes ash

• It becomes steam

How do volcanic eruptions vary?

• Some are explosive, while others are slower

• Some are silent, while others are loud

• Some are cold, while others are hot

• Some are dry, while others are wet

What is the mantle of the Earth made of?

• Water

• Solid, rocky substance called molten rock or magma

• Gaseous elements

• Ice

Approximately how thick is the Earth's mantle?

• 500 miles

• 1,800 miles

• 3,000 miles

• 4,500 miles

What escapes when a volcano erupts?

• Water

• Ice

• Magma

• Sand