Convection Currents review

Front

What is convection current?

Back

Convection current is the movement of fluid caused by differences in temperature and density, where warmer, less dense fluid rises and cooler, denser fluid sinks.

Front

What causes tectonic plates to move?

Back

Tectonic plates move primarily due to convection currents in the mantle.

Front

What happens to molten material when it cools in the mantle?

Back

When molten material cools in the mantle, the molecules condense (shrink together).

Front

What is the least dense layer of the Earth?

Back

The crust is the least dense layer of the Earth.

Front

What happens to molecules that are more dense than surrounding particles?

Back

Molecules that are more dense than surrounding particles will sink down.

Front

How do convection currents affect the Earth's surface?

Back

Convection currents in the mantle can cause the movement of tectonic plates, leading to earthquakes, volcanic activity, and the formation of mountains.

Front

What role does temperature play in convection currents?

Back

Temperature differences create density differences in fluids, which drive convection currents.

Front

What is the relationship between density and buoyancy in convection currents?

Back

Less dense fluids rise due to buoyancy, while more dense fluids sink, creating a cycle of movement.

Front

Can convection currents occur in solids?

Back

No, convection currents occur in fluids (liquids and gases) but not in solids.

Front

What is the mantle?

Back

The mantle is the thick layer of the Earth located between the crust and the outer core, composed of semi-solid rock that flows slowly.