ocean floor sinks beneath a deep-ocean trench to the mantle

What scientific fields supported Wegener’s hypothesis of continental drift?

Land Features, Fossils, and Climate

any trace of an ancient organism that has been

Name a type of evidence for sea-floor spreading:

eruptions of molten material, the ages of the rocks themselves, magnetic stripes in the rock of the ocean floor

What happens to the climate of a continent that is close to the equator?

continent moves toward the equator, its climate becomes warm

How did the fossil of the Mesosaurus support Wegener’s hypothesis of continental drift?

it was not able to swim great distances in salt water

Choose the sentence that is true about mid-ocean ridges.

A. The mid-ocean ridges were mapped using sonar.

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Continental Drift and Sea-Floor Spreading

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Students will identify the evidence for sea-floor spreading, by explaining and describing the process of subduction.

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Questions 11

Answers

1
The process that continually adds new material to the ocean floor is called ____.
mid-ocean ridges
Sonar
sea-floor spreading
Harry Hess
2
What is subduction?
the ocean floors move like conveyor belts
bounces sound waves off underwater objects
ocean floor sinks beneath a deep-ocean trench to the mantle
the sea floor spreads apart along both sides of a mid-ocean
3
true/false: Mountains, coal beds, or glacial deposits do not show evidence of continental drift
True
False
4
What scientific fields supported Wegener’s hypothesis of continental drift?
IDK
Oceanography, Physics, and Chemistry
Land Features, Fossils, and Climate
Racing, Football, and Soccer
5
What is a fossil?
“all lands,” it existed about 300 million years ago.
the continents drifted together to form the supercontinent P
any trace of an ancient organism that has been
hypothesized that all the continents were once joined togeth
6
Name a type of evidence for sea-floor spreading:
eruptions of molten material
the ages of the rocks themselves
magnetic stripes in the rock of the ocean floor
7
A device that bounces sound waves off underwater objects is called _____________.
Sonar
Harry Hess
sea-floor spreading
mid-ocean ridge
8
What happens to the climate of a continent that is close to the equator?
continent moves toward the poles, its climate becomes colder
continent moves toward the equator, its climate becomes rain
continent moves toward the equator, its climate becomes cold
continent moves toward the equator, its climate becomes warm
9
What was the name of the supercontinent?
Pacific Rim
Asia
Pangaea
Australia
10
How did the fossil of the Mesosaurus support Wegener’s hypothesis of continental drift?
continent moves toward the poles, its climate becomes colder
continent moves toward the equator, its climate becomes warm
mountain ranges on both continents line up
it was not able to swim great distances in salt water
11
Choose the sentence that is true about mid-ocean ridges.
A. The mid-ocean ridges were mapped using sonar.
C. The mid-ocean ridges are completely under water.
B. The mid-ocean ridges are found only below Pacific Ocean
D. The tops of some mid-ocean ridges are split by meteors

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