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

Vocanoes are found...

• on land
• under water
• on islands
• all of the above

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

The difference between magma and lava is _____

• where it is found (above or below the surface)
• how hot the molten rock is (lava is hotter than magma)
•  the type of boundary where it forms
• the viscosity of the molten rock (lava has a lower viscosity)

Where are most volcanoes found?

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

What is the definition of dormant?

• sleeping
• extinct
• active
• invisible

What are scientists that study volcanoes called?

• doctor
• vet
• volcanologist
• volcano scientist

The main chemical in magma is

• silca

• water vapor

• mud

• fire

What is the resistance to flow called?

• Dissolved

• Lava flow

• Pyroclastic flow

• Visocity