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Seafloor Spreading

Authored by Danielle Freeman

Science

9th - 12th Grade

Used 4+ times

Seafloor Spreading
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Media Image

Where would the oldest rock be found?

L
M
N
O

2.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

How is it possible for new crust to be formed without increasing the surface area of the Earth?

Crust is recycled in subduction zones at the same time it is created at mid-ocean ridges

New crust is underwater where it sinks

New crust breaks more easily than old crust

The oldest crust just breaks apart as the plates move

3.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

The OLDEST seafloor is located

closest to the mid-ocean ridge.

farthest from the mid-ocean ridge.

east of Hawaii

west of California

4.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Which of the following supports the theory of seafloor spreading?

Correlation of rock layers

Crustal slab pull

Magnetic reversals recorded in rocks

Continuous mountain chains

5.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Media Image

Seafloor spreading...

creates new oceanic crust

destroys or recycles crust

creates new continental crust

creates old crust

6.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Rock at the mid ocean ridges...

is the oldest rock on the earth.

is older than continental rock.

is younger than continental rock.

7.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Media Image

In the Atlantic ocean, where is the youngest seafloor located?

Towards the edges, near the eastern and western continents
Towards the middle of the ocean
Towards the north and south poles
Young seafloor is located randomly throughout the ocean

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