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Earth Science Review 7.1
Test Description: Volcanoes
Instructions: Answer all questions to get your test result.
1) What is the Ring of Fire?
A
A layer of magma that forms the shape of a ring in the Pacific Ocean
B
A belt of forests that are dry and constantly catch fire
C
A belt of volcanoes that surrounds the Pacific Ocean
D
A layer of lava that forms the shape of a ring in the Pacific Ocean
2) Where do volcanoes form?
A
Along convergent and divergent plate boundaries
B
Along transform plate boundaries
C
Along divergent plate boundaries
D
Along convergent plate boundaries
3) Which of the following is not true?
A
all of the choices
B
volcanoes often form when continental plates collide
C
volcanoes often form when oceanic plates collide
D
volcanoes often form when an oceanic plate collides with a continental plate
4) Which of the following does not occur in forming a volcano
A
Magma is more dense than an oceanic plate
B
Rock above the oceanic plate melts to form magma
C
Oceanic plate sinks through a trench
D
Magma rises to the surface and erupts as lava
5) What are island arcs?
A
A string of islands formed where 2 oceanic plates converge
B
all of the choices
C
A string of islnads that echo the curve of a deep ocean trench
D
A string of islands formed by volcanoes
6) which is not true regarding hot spot volcanoes?
A
A hot spot is an area from deep within the mantle that rises and melts forming volcanoes
B
none of the choices
C
Volcano forms above a hot spot when magma erupts through the crust and reaches the surface
D
Older volcanoes are located closer to the hot spot
7) What is the difference between hot spot volcanoes and island arcs?
A
hot spot volcanoes occur on one plate, island arcs occur along the boundary of 2 oceanic plates
B
hot spot volcanoes occur along divergent boundaries, island arcs occur along convergent boundaries
C
island arcs occur on one plate, hot spot volcanoes occur along the boundary of 2 oceanic plates
D
island arcs occur along divergent boundaries, hot spot volcanoes occur along convergent boundaries
8) What causes volcanoes to form at a divergent plate boundary?
A
Lava sinks through an ocean trench
B
Lava sinks into cracks in the boundaries
C
Lava pours out of cracks in the boundaries
D
Lava that rises at a deep ocean trench
9) Which is not an example of an island arc?
A
Japan
B
Australia
C
The Phillipines
D
Indonesia
10) What is the difference between magma and lava?
A
Lava is when molten material reaches the surface
B
2 of the choices
C
Magma is molten material that reaches the surface
D
Lava is a molten material in the mantle
*select an answer for all questions
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