Natural Disasters Final Review 2025

1. A volcano is a ________ that contains melted (molten) rock.

• mountain

• river

• forest

• valley

2. Volcanoes most commonly occur at ________.

• plate boundaries

• deserts

• polar regions

• rainforests

When molten rock is below Earth's surface it is called ________.

• magma

• lava

• basalt

• granite

What kind of rocks are formed when molten rock cools?

• igneous

• metamorphic

• sedimentary

• all of these

These volcanoes do not erupt explosively. They ooze lava that spreads over a wide area. The layers and layers of lava build up to form wide, gentle slopes.

• cinder cone

• caldera

• composite

• shield

What simple type of volcano is made of lava fragments that have been ejected from a volcanic vent?

• cinder cone

• caldera

• composite

• shield

What type of volcano has steep sides and alternating layers of ash and lava?

• cinder cone

• caldera

• composite

• shield

Volcanoes only exist on land.

• True

• False

Volcanoes alter Earth's landscape much more quickly than many other geoscience processes.

• True

• False

Only some volcanoes are active.

• True

• False