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bpvolcano

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

Where does magma come from?
a.
the Earth’s mantle
c.
the lithosphere
b.
the Earth’s inner core
 

 2. 

Whatg is magma called when it’s on the Earth’s surface?
a.
marmite
c.
lava
b.
pyrite
 

 3. 

What happens in a subduction zone?
a.
one tectonic plate is pushed under another, into the mantle
c.
several tectonic plates are ripped apart
b.
two tectonic plates move away from each other
 

 4. 

what is volcanic ash made of?
a.
lava fragments
c.
smoke and steam
b.
tiny bits of rock
 

 5. 

What kind of lava erupts from a shield volcano?
a.
chunky lava
c.
ash lava
b.
runny lava
 

 6. 

What happens at mid-ocean ridges?
a.
two plates converge, creating new crust
c.
Atoll island chains are constantly forming
b.
volcanoes erupt, adding to the ocean floor
 

 7. 

What releases steam and hot gas from the ground?
a.
a fumarole
c.
a hurricane
b.
a tsunami
 

 8. 

How are calderas formed?
a.
by slow moving lava
c.
by asteroids
b.
by explosive volcanic eruptions
 

 9. 

What might result from ash clouds lingering in the atmosphere?
a.
holes in the ozone layer
c.
climate change
b.
a permanent terrible smell
 

 10. 

What is the Ring of Fire?
a.
a series of hotspots in the Atlantic Ocean
c.
another name for all the volcanoes in the United States.
b.
a chain of volcanoes around the Pacific Ocean
 



 
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