1.Which of these factors determines whether or not a protoplanet undergoes diffe

ID: 115088 • Letter: 1

Question

1.Which of these factors determines whether or not a protoplanet undergoes differentiation?

The composition of the planet

The age of the planet

The size of the planet

How close the planet is to the Sun

2.The Mid-Atlantic Ridge is best described as:

a line of undersea mountains caused by two plates colliding and pushing each other upward.

a fold in the middle of a plate caused by compressing forces on both sides of the plate.

a region where one plate is being subducted beneath another.

a boundary where two plates are moving apart, allowing molten subsurface rock to rise upward.

a region in the middle of a plate that happens to lie over a hot spot in the mantle.

3.Why do volcanoes form at subduction zones?

Increased water content as the subducting slab releases water into the overlying plate.

Increased pressure as the subducting slab hits the overlying plate.

Decreased temperature due to water in the subducting slab.

The subducting slab creates a hot spot.

The composition of the planet

The age of the planet

The size of the planet

How close the planet is to the Sun

1. The composition of planet.

If the planet has composition with various density materials then it will undergo differentiation

2. a boundary where two plates are moving apart, allowing molten subsurface rock to rise upward.

3. Decreased temperature due to water in the subducting slab.

The water is subducting plate is released to upper please, the water has effect of lowering the melting temperature of mantle.

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