Convection Currents review

Front

What is the main cause of tectonic plate movement?

Back

Convection currents

Front

What happens to molten material when it is cooled in the mantle?

Back

It becomes more dense.

Front

What happens to molten material when it is heated in the mantle?

Back

It becomes less dense.

Front

What is the lithosphere of the Earth divided into?

Back

Plates.

Front

What happens to hotter material in the Earth's mantle?

Back

It becomes less dense and rises.

Front

Define convection currents.

Back

Convection currents are the movement of fluid caused by differences in temperature and density.

Front

What role do convection currents play in the Earth's mantle?

Back

They drive the movement of tectonic plates.

Front

What is density?

Back

Density is the mass of a substance divided by its volume.

Front

How does temperature affect the density of materials?

Back

As temperature increases, materials generally become less dense.

Front

What is the difference between the lithosphere and asthenosphere?

Back

The lithosphere is rigid and includes the crust and upper mantle, while the asthenosphere is semi-fluid and allows for movement.