How are the magnetic stripes within the seafloor evidence for seafloor spreading?

the magnetic stripes are identical on either side of ridge

Why is the Pacific Ocean shrinking?

There is a high amount of subduction

What type of evidence for seafloor spreading is shown in the picture?

pillow lava erupting from mid-ocean ridge

Which of the following is NOT evidence for seafloor spreading?

same fossils on different continents

How does the change in size of the Atlantic Ocean compare to the Pacific Ocean?

Atlantic is growing, Pacific is shrinking

Why is the Atlantic Ocean getting larger?

There is more seafloor spreading than subduction occurring

What type of evidence is shown by the colored stripes in the diagram?

magnetic stripes of the seafloor

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seafloor spreading

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Answers

1
Seafloor spreading along the mid-Atlantic Ridge is causing Africa and South America to
subduct underneath eachother
move away from each other
move towards each other
move side to side
2
The gray and white stripes in the diagram are what type of evidence for seafloor spreading?
magma erupting from mid-ocean ridge
magnetic pattern of seafloor
age of the seafloor
3
Why is continental crust much older than oceanic crust?
oceanic crust subducts
new oceanic crust forms at mid-ocean ridges
continental crust subducts
new continental crust forms at mid-ocean ridges
4
How are the magnetic stripes within the seafloor evidence for seafloor spreading?
the magnetic stripes are identical on either side of ridge
the age of the seafloor is recorded within the strips
magnetic stripes have a different pattern on either side
magnetic stripes record the switching of Earth's poles
5
Why does oceanic crust subduct underneath continental crust?
oceanic crust is thinner
oceanic crust is heavier
oceanic crust is more dense
continental crust is more dense
6
Why is the Pacific Ocean shrinking?
There is a high amount of subduction
There are equal rates of seafloor spreading and subduction
There are many mid-ocean ridges in the Pacific
There is a high amount of seafloor spreading
7
What type of evidence for seafloor spreading is shown in the picture?
pillow lava erupting from mid-ocean ridge
pillow lava erupting from mountain range
pillow lava erupting from deep-ocean trench
pillow lava erupting from subduction zone
8
What process is being shown in the animation?
convection in mantle
seafloor spreading
subduction
continental drift
9
Where is the oldest seafloor in the diagram?
on top of the continent
near the mid-ocean ridge
near the deep-ocean trench
10
What process is occurring in the diagram below?
subduction
continental drift
rifting
seafloor spreading
11
Which of the following is NOT evidence for seafloor spreading?
magnetic pattern of the seafloor
same fossils on different continents
age of the seafloor
the magma erupting from mid-ocean ridges
12
Where is the youngest rock of the seafloor in the diagram
halfway between ridge and trench
closest to the mid-ocean ridge
closest to the deep ocean trench
on the continents
13
How does the change in size of the Atlantic Ocean compare to the Pacific Ocean?
Atlantic growing, Pacific staying same size
Atlantic is shrinking, Pacific is growing
Atlantic staying same size, Pacific shrinking
Atlantic is growing, Pacific is shrinking
14
Why is the Atlantic Ocean getting larger?
There is more subduction occurring and less spreading
There are many trenches along the continents
There is more seafloor spreading than subduction occurring
Because Btags said so!
15
What feature are the arrows pointing to in the diagram?
mountain ranges
deep ocean trenches
mid-ocean ridges
subduction zones
16
What feature is shown by the black dashed line in the diagram?
mid-ocean ridge
mountain range
deep-ocean trench
continental shelf
17
True or False: Seafloor Spreading causes Continental Drift
TRUE
FALSE
18
What type of evidence is shown by the colored stripes in the diagram?
magnetic stripes of the seafloor
age of the seafloor
continental drift
new seafloor forming

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