Study Guide for Science Test on March. 14

Which material is the best conductor of electricity? 

• Metal
• Glass
• Wood
• Plastic

A magnet is attracted to which of the following....

• Copper penny
• Paper clip
• Piece of cloth
• Drinking straw

Both batteries and magnets have...

• Wires
• Filaments
• Attractive and repulsive forces
• Receivers 

One student rubs a balloon against his hair several times. Another student passes a comb through her hair several times. The student places the comb near the balloon and observe that the comb repels the balloon. Which is the most likely reason the comb is able to repel the balloon?

• The balloon has a positive charge and the comb is neutral
• The balloon and the comb have the same electrical charge
• The balloon has a negative charge and the comb is neutral
• The balloon and the comb have opposite electrical charges 

Sue rubs a balloon on her hair. The balloon is then able to stick to the wall. This is an example of...

• Static charge
• Magnetism
• Poles
• Iron

Paulina built a simple circuit for her science project. She wrapped a wire around a nail and connected the wire to a battery. Paulina showed how the nail attracted metal paper clips when the circuit was complete. What attracted the paper clips to the nail?

• Gravitational Force
• Heat Energy
• Magnetic Force
• Sound energy 

What would happen if a magnet was placed in the center of a plastic bowl containing a mixture of iron filings and sand?

• The sand will be repelled by the magnet
• The iron filings will be attracted to the magnet
• The sand will be attracted to the magnet
• The iron filings will be repelled by the magnet 

A company wants to make a game that uses a magnet that sticks to a board. Which material should it use for the board?

• Cardboard
• Glass
• Steel
• Wood

When Mrs. Springs took her clothes out of the dryer, she noticed that a sock was clinging to her favorite shirt. Which situation could cause the sock to be attracted to the shirt?

• Both the sock and shirt have large positive charges
• Both the sock and the shirt have small negative charges
• The sock has a small positive charge, but the shirt has a small negative charge
• The sock has a small positive charge while the shirt has a large positive charge 

What poles does a magnet have?

• North and South
• East and West
• Positive and Negative
• Red and Black