Volcanoes,Plate Boundaries and Divergent Boundaries
Hot Spot Volcanoes
Converging Boundaries
100
What is magma?
A) red hot stuff
B)a molten mixture of rock forming a substance with no water.
C)a weak spot in the crust
B)a molten mixture of rock forming a substance with no water
100
Volcanic belts form along the _____ of Earth's plates.
A)boundaries
B)subduction
C)volcanoes
A) boundaries
100
True or False?
A hot spot is an area where the material from deep from within the mantle rises them melts forming the lava or magma
True
100
Many volcanoes form near _____ where oceanic plates return to the mantle and end their cycle.
converging plate boundaries
200
What is a volcano?
Is it
A weak spot in the crust when molten material (or magma) comes to surface
OR
A strong spot in the crust when molten material (or magma) comes to the surface.
A weak spot in the crust when molten material (or magma) comes to surface
200
Volcanoes occur in ___ that extend across continents and oceans.
belts
200
Can hot spots form underneath continents and underwater?
Yes, hot spots can form underneath continents and underwater.
200
Through subduction, the older,softer plate slides back down into the_____.
mantle
300
True or False?
When magma reaches the surface it is lava.
True
300
What marks where the diverging boundaries are?
A) plate boundaries
B)mid-ocean ridges
C)volcanic belts
B)mid-ocean ridges
300
Can hot spots on the ocean floor form a series of volcanic mountains?
Yes, hot spots on the ocean floor form a series of volcanic mountains
300
The resulting of volcanoes forming a string of islands is called
A)island arc
B)ring of fire
C)island plates
A) island arc
400
Fill in the blank:
After lava ___ it forms solid rock on Earth's surface.
A)hardens
B)heats up
C)cools
C)cools
400
Where do scientists find it difficult to identify and locate volcanoes?
Underwater
400
Are all hot spots located in the middle of plates and are far away from plate boundaries?
No, they can occur in the middle of plates and are far away from plate boundaries. But, other occur near plate boundaries
400
Where do volcanoes sometimes form? (hint:oceanic plates and continental plates)
Volcanoes sometimes form where oceanic plates collide with continental plates.
500
Fill in the blank:
In 2002 Mount _____ erupted in glowing fountains and rivers of molten rock.
A) Mount Whitney
B)Mount Volcano
C)Mount Etna
c)Mount Etna
500
True or False?
At plate boundaries large pieces ONLY converge which allows magma reach the surface
False; It also diverges at plate boundaries
500
A volcano ___ above a hot spot when magma explodes through the Earth's crust and reaches the Earth's surface.