Science Review November 24

Front

What do fiber optic and satellite technologies use to transmit information?

Back

Waves

Front

What happens to the current when a magnet is passed through a coil of wire in the opposite direction?

Back

The current is the same strength but in the opposite direction.

Front

Which factor does NOT increase the strength of an electromagnet?

Back

Increased size of paperclips.

Front

How can you identify a slower speed on a graph?

Back

The line that is less steep (line 2).

Front

What can a stronger electromagnet do?

Back

Pick up more paperclips.

Front

Define an electromagnet.

Back

A type of magnet in which the magnetic field is produced by an electric current.

Front

What is the relationship between the number of coils in an electromagnet and its strength?

Back

Increasing the number of coils increases the strength of the electromagnet.

Front

What is the effect of increasing the battery size on an electromagnet?

Back

It increases the strength of the electromagnet.

Front

What is the principle behind generating electricity using a magnet and a coil of wire?

Back

Electromagnetic induction.

Front

What is the role of a magnet in a generator?

Back

To create a magnetic field that induces an electric current in the wire.