Earth Science Review 7.1 Question Preview (ID: 12959)
Volcanoes.
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What is the Ring of Fire?
a) A belt of volcanoes that surrounds the Pacific Ocean
b) A belt of forests that are dry and constantly catch fire
c) A layer of magma that forms the shape of a ring in the Pacific Ocean
d) A layer of lava that forms the shape of a ring in the Pacific Ocean
Where do volcanoes form?
a) Along convergent plate boundaries
b) Along divergent plate boundaries
c) Along transform plate boundaries
d) Along convergent and divergent plate boundaries
Which of the following is not true?
a) volcanoes often form when oceanic plates collide
b) volcanoes often form when an oceanic plate collides with a continental plate
c) volcanoes often form when continental plates collide
d) all of the choices
Which of the following does not occur in forming a volcano
a) Oceanic plate sinks through a trench
b) Rock above the oceanic plate melts to form magma
c) Magma is more dense than an oceanic plate
d) Magma rises to the surface and erupts as lava
What are island arcs?
a) A string of islands formed where 2 oceanic plates converge
b) A string of islands formed by volcanoes
c) A string of islnads that echo the curve of a deep ocean trench
d) all of the choices
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) Volcano forms above a hot spot when magma erupts through the crust and reaches the surface
c) Older volcanoes are located closer to the hot spot
d) none of the choices
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) island arcs occur on one plate, hot spot volcanoes occur along the boundary of 2 oceanic plates
c) hot spot volcanoes occur along divergent boundaries, island arcs occur along convergent boundaries
d) island arcs occur along divergent boundaries, hot spot volcanoes occur along convergent boundaries
What causes volcanoes to form at a divergent plate boundary?
a) Lava pours out of cracks in the boundaries
b) Lava sinks through an ocean trench
c) Lava that rises at a deep ocean trench
d) Lava sinks into cracks in the boundaries
Which is not an example of an island arc?
a) Australia
b) Indonesia
c) Japan
d) The Phillipines
What is the difference between magma and lava?
a) Lava is a molten material in the mantle
b) Lava is when molten material reaches the surface
c) Magma is molten material that reaches the surface
d) 2 of the choices
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