PMA2 Practice 21-22

Front

What do all cubes made of different materials but with the same dimensions have in common?

Back

They have the same volume.

Front

What do weathering and erosion produce?

Back

Sediments.

Front

What is a medium in the context of waves?

Back

The substance through which a wave can travel.

Front

Why are scientific theories modified?

Back

New evidence that supports a change prompts scientists to modify earlier theories.

Front

What type of boundary is formed when tectonic plates move apart?

Back

Divergent boundary.

Front

What is density?

Back

Density is the mass of an object divided by its volume.

Front

What is the difference between weathering and erosion?

Back

Weathering is the breaking down of rocks, while erosion is the movement of sediments.

Front

What is an example of a sedimentary rock?

Back

Sandstone.

Front

What is the definition of a wave?

Back

A wave is a disturbance that transfers energy through space or matter.

Front

What is the role of electrons in an atom?

Back

Electrons are negatively charged particles that orbit the nucleus of an atom.