FORM 1 VOLCANOES

What is a volcano

• an opening in the Earth's mantle

• an opening in the Earth's crust

• an opening in the Earth's core

Molten rock inside the earth's crust is called

• magma

• lava

• gases

Molten rock outside the earth's crust is called

• magma

• lava

• gases

A ........................... is a person who studies volcanoes

• geologist

• volcanologist

• paleontology

In the diagram, showing the structure of the volcano "1" represents

• ash cloud

• crater

• pyroclastic flow

• magma chamber

In the diagram, showing the structure of the volcano "2" represents

• ash cloud

• crater

• pyroclastic flow

• magma chamber

In the diagram, showing the structure of the volcano "4" represents

• ash cloud

• crater

• pyroclastic flow

• magma chamber

In the diagram, showing the structure of the volcano "6" represents

• ash cloud

• crater

• pyroclastic flow

• magma chamber

This lava consists of 50 percent silica with temperatures between 1,000 - 1,200°C and is highly fluid

• basic lava

• acidic lava

This lava is which is very thick and viscous with temperatures often between 800-1,000°C

• basic lava

• acidic lava