Geology - Volcanoes Review

What is molten rock that has formed deep within the Earth?

• Hot Spot
• Magma
• Lava
• Volcano

What type of volcano is shown above?

• Strato

• Cinder Cone

• Shield

• Composite

If a volcano is high in silica and water it will probably _____.

• erupt quietly

• remain dormant

• erupt explosively

• produce dark colored lava

Identify the type of volcano.

• cinder cone

• composite

• shield

• extinct

What might happen if a major volcanic eruption occurred every year?

• Global temperatures might rise by several degrees.

• The earth's crust might be depleted of rocks.

• Global temperatures might cool by several degrees.

• Nothing out of the ordinary.

Which of the following is an opening through which molten rock and gas leave a volcano

• pipe
• magma chamber
• crater
• vent

What is pyroclastic material?

• Dust, ash and other material that comes out of a volcano.
• A type of magma that is in a volcano.
• A type of volcano.

__________ volcanoes are formed from fast flowing, lava which flows easily over the surface, forming larger volcanoes with gentle sides.

• Cone
• Composite
• Angel
• Shield

What factor(s) determine(s) whether an eruption will be explosive?

• The amount of gases in the magma
• The amount of silica in the magma
• The amount of gas and silica in the magma
• None of these affect the explosiveness of the volcano

As magma rises towards the surface it collects in a 'room' called a _____ _____ . 

• magma chamber
• side vent
• main vent
• lava chamber