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

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

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
• The rubbing of two tectonic plates that causes the earth to shake

• An opening in the Earth where magma escapes

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

Why does magma tend to rise to the surface?

• It has large amounts of silica.
• It contains very little silica.
• It is denser than the surrounding material.
• It is less dense than the surrounding material.

Tags

NGSS.MS-PS2-4

What type of volcano has steep slopes made of alternating layers of ash and silica rich lava?

• Caldera
• Cinder Cone
• Composite Volcano
• Shield Volcano

What type of volcano has steep slopes and is made of lava fragments that have been ejected from a volcanic vent?

• Caldera
• Cinder Cone
• Composite Volcano
• Shield Volcano