Causes of Earthquakes and Tectonic Plate Movements

The video explains the Earth's tectonic plates, their movements, and interactions at plate boundaries. It covers the formation of new crust through rifting, mountain formation through continental collisions, and the occurrence of earthquakes due to friction at fault lines. The video also highlights the significant impact of subduction zones, where the largest earthquakes occur, such as the 2004 Sumatra earthquake.

What is the term for the locations where tectonic plates meet?

• Plate boundaries

• Fault lines

• Subduction zones

• Rift zones

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What happens when tectonic plates drift away from each other?

• They slide past each other

• They cause earthquakes

• They create new oceanic crust

• They form mountains

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What is the process called when an oceanic plate slips under another plate?

• Mountain formation

• Conservative boundary

• Subduction

• Rifting

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How are mountains like the Himalayas formed?

• By oceanic plates slipping under each other

• By continental plates pushing upwards

• By subduction

• By rifting

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What is a conservative plate boundary?

• Where plates drift apart

• Where plates collide and form mountains

• Where plates slide past each other

• Where plates subduct

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At what average rate do tectonic plates move?

• 4 centimeters per year

• 2 centimeters per year

• 1 centimeter per year

• 6 centimeters per year

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What causes high friction between tectonic plates?

• Their temperature

• Their speed of movement

• Their composition

• Their immense size and weight

What determines the magnitude of an earthquake?

• The depth of the oceanic crust

• The temperature of the Earth's mantle

• The size of the fault and movement of rock slabs

• The speed of tectonic plates

Where do the largest earthquakes typically occur?

• At rift zones

• At mountain ranges

• At conservative boundaries

• At subduction plate boundaries

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What was the magnitude of the Sumatra Boxing Day earthquake?

• 8.1

• 10.1

• 7.1

• 9.1

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