Y4/2025SUT/SCI/EOT

What is a volcano?

• A tall mountain covered in snow.

• A hole in the ground that lets out water.

• A big rock in the ocean.

• A mountain or hill with a vent where lava, rock fragments, hot vapor, and gas are ejected.

What is the hot liquid rock inside a volcano called?

• Water

• Magma

• Ash

• Lava

What is the melted rock that flows out of a volcano called?

Where are most volcanoes found?

• In the middle of big flat lands.

  Show hint

• Under the biggest cities.

• At the top of every mountain.

• Along the edges of tectonic plates, often under the ocean.

What is the opening at the top of a volcano called?

• A chimney

• A crater

• A cave

• A valley

What is a 'dormant' volcano?

• A volcano that is currently erupting.

• A volcano that is completely gone.

• A volcano that has never erupted.

• A volcano that is sleeping and might erupt again in the future.

What causes volcanoes to erupt?

• Animals digging tunnels.

• Pressure from magma and gases building up inside the Earth.

• Strong winds blowing on the mountain.

• Too much rain.

Which layer is the outermost layer of the Earth, where we live?

What is the thickest layer of the Earth?

Which layer of the Earth is made of liquid iron and nickel?