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There are a number of theories as to why tectonic plates move. Which of the following are not theories for plate movement?

Please select 2 correct answers

Correct! Wrong!

Identify the theory of plate movement described below: Newly-formed plates at oceanic ridges (constructive plate margins) are warm and have a higher elevation at the oceanic ridge than the colder, more dense plate material further away; gravity causes the higher plate at the ridge to push away, causing the plates to move away from each other.

Correct! Wrong!

Identify the theory of plate movement described below: As the semi-molten rock in the mantle is heated, it becomes less dense than its surroundings and rises. It spreads out as it reaches the crust above, moving the plates. As the semi-molten rock cools, it gradually sinks back down to reheat.

Correct! Wrong!

Identify the theory of plate movement described below: At destructive plate margins the denser, oceanic plate sinks into the mantle under the influence of gravity, which pulls the rest of the plate along with it.

Correct! Wrong!

Identify the theory of plate movement labelled A.

Plate Movement
Correct! Wrong!

Identify the theory of plate movement labelled B.

Plate Movement
Correct! Wrong!

Identify the theory of plate movement labelled C.

Plate Movement
Correct! Wrong!

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