OpenSciEd- Unit 8.3 Forces at a Distance

Front

What are the two poles of a magnet called?

Back

North and South poles.

Front

What happens to the gravitational force between two objects as they move farther apart?

Back

The gravitational force becomes weaker.

Front

What occurs when two like poles of magnets are brought together?

Back

They repel each other.

Front

What changes when the strength of a magnetic field changes?

Back

The attractive force between the coil and the permanent magnet changes.

Front

Which component is not necessary for a speaker system to produce sound?

Back

Metal frame.

Front

What is the definition of a magnetic field?

Back

A region around a magnet where magnetic forces can be detected.

Front

What is the effect of distance on gravitational force?

Back

Gravitational force decreases as distance increases.

Front

What is the principle behind magnets attracting or repelling each other?

Back

Opposite poles attract, and like poles repel.

Front

What is an example of a force at a distance?

Back

Gravitational force and magnetic force.

Front

What is the role of a magnet in a speaker system?

Back

To create a magnetic field that interacts with the coil to produce sound.