What is a volcano?

• A mountain

• An opening in Earth's crust through which lava erupts onto the surface

• A type of rock

• A river

Fill in the blank: A volcano releases lava, ash, and ______ onto Earth's surface.

• Water

• Gases

• Sand

• Soil

Fill in the blank: The same process that forms volcanic islands can produce volcanoes on ______.

• Oceans

• Continents

• Rivers

• Deserts

What is the significance of Mauna Loa mentioned in the image?

• It is the tallest mountain

• It has erupted 33 times since 1843

• It is a river

• It is a desert.

Which of the following is a result of the Krakatau eruption in 1883?

• It created a new island.

• It caused a tsunami that swept away over 150 villages.

• It was heard only in Indonesia.

• It had no effect on the climate.

What happens when a volcano with a large magma chamber explodes?

• The chamber empties quickly

• The chamber fills with water

• The chamber remains intact

• The chamber becomes a mountain.

Fill in the blank: Magma can slowly accumulate in a ______ deep inside the volcano.

• Chamber

• Lake

• Mountain

• River

What can form on the surface when volcanic rock collapses?

• A) A crater

• B) A mountain

• C) A river

• D) A forest

Krakatau is a volcano located along the ______.

• Atlantic Ocean

• Ring of Fire

• Indian Ocean

• Arctic Circle