Pangaea Flashcard Review

Front

What is convection current?

Back

A convection current is the movement of fluid (liquid or gas) caused by the difference in temperature and density within the fluid.

Front

What happens to hot substances in convection currents?

Back

Hot substances are less dense and rise.

Front

What happens to cold substances in convection currents?

Back

Cold substances are more dense and sink.

Front

What is the theory of continental drift?

Back

The theory states that the continents were once all connected and have slowly drifted apart over time.

Front

What is the Earth's crust made up of?

Back

The Earth's crust is made up of moving tectonic plates.

Front

How do convection currents in the mantle affect plate movement?

Back

Convection currents in the mantle cause the tectonic plates to move.

Front

What is solar energy?

Back

Solar energy is the energy that comes from the sun.

Front

What causes convection currents in the mantle?

Back

Convection currents are caused by the heating of the mantle material near the outer core and cooling near the surface.

Front

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

Back

Hot substances are less dense and rise, while cold substances are more dense and sink.

Front

What role do earthquakes play in plate movement?

Back

Earthquakes occur at plate boundaries and can indicate the movement of tectonic plates.