8 Chapter 4 Test

According to Wegener's hypothesis of continental drift

• Earth's surface is made up of seven major landmasses.
• the continents do not move.
• Earth is slowly cooling and shrinking.
• the continents were once joined together in a single landmass.

In sea-floor spreading, molten material rises form the mantle and erupts

• along the edges of all the continents.
• along mid-ocean ridges.
• in deep-ocean trenches.
• at the north and south poles.

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NGSS.MS-ESS2-1

Old oceanic crust is more dense than new oceanic curst because it is

• hot.
• moving toward a deep-ocean trench.
• cool.
• closer to the mid-ocean ridge.

In which location would you most likely find volcanoes?

• far from plate boundaries
• along transform boundaries
• where two continental plates collide
• along mid-ocean ridges and where a plate is subducted

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NGSS.HS-ESS2-1

The geological theory that states that pieces of Earth's lithosphere are in constant, slow motion is the theory of

• subduction.
• plate tectonics.
• deep-ocean trenches.
• sea-floor spreading.

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NGSS.MS-ESS2-3

A place where two plates slip past each other, moving in opposite directions, is known as a

• transform boundary
• divergent boundary
• convergent boundary
• rift valley

A collision between two pieces of continental crust at a converging boundary produces a

• mid-ocean ridge.
• deep-ocean trench.
• rift valley
• mountain range.

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NGSS.MS-ESS2-2

The process of __________________________ continually adds new crust to the ocean floor along both sides of the mid-ocean ridge.

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NGSS.MS-ESS2-3

When continental plates pull apart at a divergent boundary on land, a(n) _________________________ forms.

What occurs when two oceanic plates collide?

• The plates both go under each other.

• They collide to form a mountain range.

• The more dense plate subducts under the less dense plate.