Review #3 24-25 Flashcard

Front

What determines the force between two magnets?

Back

The force between two magnets depends on how their poles face each other.

Front

Which object is the strongest magnet in an experiment with a bar, disc, and rod?

Back

The bar is the strongest magnet, the disc is a weaker magnet, and the rod is nonmagnetic.

Front

What surface does a ball roll fastest on?

Back

Concrete.

Front

What surface does a ball roll slowest on?

Back

Sand.

Front

What is a thermal insulator?

Back

A material that does not conduct heat well, such as thick foam or thick plastic.

Front

What is friction?

Back

A force that opposes motion between two surfaces in contact.

Front

What happens to the temperature of water in an open cup over time?

Back

It increases due to heat from the air.

Front

What is magnetism?

Back

A force that can attract or repel certain materials, like iron.

Front

What is the role of gravity?

Back

A force that pulls objects toward the center of the Earth.

Front

What is the difference between a thermal conductor and a thermal insulator?

Back

A thermal conductor allows heat to pass through easily, while a thermal insulator does not.