EOY Physical Science

Electricity will flow when a circuit is _____.

• open

• closed

• parallel only

• series only

Cutting paper and melting ice are both examples of a _______.

• physical change

• chemical change

• movement change

• non-change

Mixing vinegar and baking soda is an example of a _________.

• mechanical change

• physical change

• change in state

• chemical change

Water moving from ice to liquid to gas as the temperature changes is known as _______________________.

• weathering

• erosion

• change in state

• chemical change

What is a true statement about permanent magnets?

• They can be turned on and off.

• They are very useful.

• They are always magnets.

• They are electromagnets.

If you put the north end of one magnet to the south end of a another magnet, what will happen?

• They will attract.

• They will repel.

• They will neither attract or repel.

• They will attract for awhile, but eventually repel.

Where is a permanent magnet the strongest?

• south end

• north end

• at the poles

• along the sides

Lightening is an example of __________.

• permanent magnet

• static electricity

• current electricity

• electromagnetism

An electromagnet can be made more powerful by _____.

• adding more batteries

• adding more coils around the bar

• using thicker wire

• all of the above

When you see light, feel heat, see an explosion, a color change, or some time of reaction, it is an indication that _______ occurred.

• chemical change

• mechanical change

• electricity

• magnetism