Earth's tectonic plates

What separates the South American plate and the African plate?

• The Mid-Pacific Ridge

• The Indian Ocean

• The Mid-Atlantic Ridge

• The Indo-Australian Plate

What are tectonic plates comprised of?

• Pieces of the planet's lithosphere.

• Pieces of the planet's asthenosphere.

• Pieces of volcanic rock.

• Pieces of metallic ore.

Which of the following major plates is located farthest south?

• The African Plate

• The South American Plate

• The Antarctic Plate

• The Eurasian Plate

Which of the following theories asserts that earth's crust is broken up into plates?

• Plate Tectonics

• Tectonic Drift

• Lithospheric Phenomenon

• Plate Electronics

What makes the Pacific plate unique compared to other plates?

• It is the only major plate that is mainly underwater.

• It borders the African Plate.

• It is the only major plate that contains both continental crust and oceanic crust.

• It is the smallest of the major plates.

As the leading edge of a tectonic plate is forced back into the mantle, a small convection current forms beneath it, pulling it downwards. This is known as what?

• Trench suction

• Thermal convection

• Ridge push

• All answers are correct

When the mantle pushes the edges of a tectonic plate higher, gravity can pull downward on it, causing the plate to move. This is known as what?

• Trench suction

• Ridge push

• Slab pull

• Thermal convection

What are tectonic plates?

• Large serving dishes

• A mechanism by which the crust of the Earth moves

• The entire surface of the Earth

• Large pieces of the Earth's crust

The process by which heat from the Earth's interior causes magma to rise and sink is known as what?

• Thermal convection

• Slab pull

• Trench suction

• All answers are correct

As the leading edge of a tectonic plate moves back into the Earth, gravity can assist its movement downward. This is known as what?

• Thermal convection

• Slab pull

• Ridge push

• Trench suction