Concept 2.2 8th

The diagram below shows that ______________________.

• As distance increases, the electric force increases.
• As distance decreases, the objects become less attractive.
• Electric forces are only slightly affected by distance.
• As distance increases, the electric force decreases.

These objects would...

• Attract

• Repel

• No reaction

These objects would...

• Attract

• Repel

• No reaction

The strongest part of a magnet is...

• the bars .

• the force field.

• the poles.

• the middle.

The area of magnetic force around a magnet is known as its _____________.

• magnetic field

• magnetic declination

• magnetic fan lines

• magnetic tan lines

In this image, matching north poles from two magnets are introduced.  What do you predict will be the outcome?

• There will be no interaction.  The poles of magnets do not have an effect on one another.
• The two north poles will attract each other
• The two north poles will repel each other
• The two magnets will combine and become one magnet

Which scientist discovered a current can be induced by moving a magnet in a coil of wire?

• Oersted

• Farraday

• Maxwell

• Tesla

A mixture of salt, sand, chalk dust, and iron filings must be separated. Which part of the mixture can be separated using a magnet?

• salt

• sand

• chalk dust

• iron fillings

Which statement is true about magnetic poles?

• • Like poles attract.

• • Like poles aren't possible.

• • Opposite poles repel.

• • Opposite poles attract.

What will happen if two positively charged objects are pushed toward each other?

• • They will attract each other.

• • They will create a spark.

• • They will create static electricity.

• • They will repel each other.