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Plate Tectonics and Earth's Structure Quiz

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Plate Tectonics and Earth's Structure Quiz

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Questions and Answers

What is plate tectonics?

The theory that the earth is flat and does not move

The theory that the earth's surface is broken into larger pieces of crust called plates (correct)

The theory that the earth's surface is made of a single solid piece

The theory that the moon's surface is broken into larger pieces of crust called plates

What is the upper part of the mantle known as?

Stratosphere

Troposphere

Lithosphere

Asthenosphere (correct)

How thick can continental plates be?

Up to 300 km

Up to 5-10 km

Up to 150 km (correct)

Up to 50 km

What did plate tectonics solve?

The mystery of drifting continents Signup and view all the answers

In what century was plate tectonics proposed?

20th century Signup and view all the answers

What is the main theory of plate movement?

The movement of the plates is primarily driven by the heat from the earth's core causing convection cells in the mantle Signup and view all the answers

What is the mantle layer of the earth mainly composed of?

Oxygen, silicon, magnesium, and iron Signup and view all the answers

What causes the movement of plates at converging boundaries?

Ridge push due to plates being higher at the spreading center Signup and view all the answers

What is the role of gravity in plate movement at oceanic trenches?

Gravity pulls one plate under another plate and back into the mantle Signup and view all the answers

What is the main source of heat that drives the convection cells in the mantle?

Heat from the radioactive decay of uranium and other elements in the core Signup and view all the answers