Volcanoes

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

• Hot Spot
• Magma
• Lava
• Volcano

What is molten rock that has reached the Earth's surface?

• Aa
• Lava
• Magma
• Pahoehoe

Tags

NGSS.MS-ESS2-1

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

Tags

NGSS.MS-ESS2-1

What is a volcano?

• A mountain that has lava all over it 
• A giant hill filled with magma
• A long high sea wave 
• A hole in the Earth where magma erupts

Where are most volcanoes found?

• Southern Hemisphere
• Ring of Fire
• Mid-Atlantic Ridge
• Hot Spots

Volcanoes that have recently erupted are known as:

• Extinct Volcano
• Dormant Volcano
• Active Volcano
• What's a volcano?

A volcano that has erupted in the last 2000 years but not recently is known as....

• Dormant
• Active
• Extinct
• Angry

Volcanoes that have not erupted for at least 10,000 years are described as...

• Sleeping
• Dormant
• Active
• Extinct

What percent of the Earth's volcanoes reside in the Ring of Fire?

• 75%
• 100%
• 90%
• 0%