Lesson on Electricity

What types of charges attract?

• Positive and Positive

• Positive and Neutral

• Negative and Neutral

• Positive and Negative

Miss Madsen rubbed two balloons with a piece of wool. What will happen when the balloons are brought near each other?

• The balloons will repel each other.

• The balloons will attract each other.

• The balloons will become positively (+) charged.

• The balloons will pop.

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What is static electricity caused by?

• A balance of power

• A balance of positive and negative charges

• An imbalance of positive and negative charges

• An imbalance of protons and neutrons

An object will become POSITIVELY charged when it:

• loses electrons

• gains electrons

• loses protons

• gains neutrons

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Two objects with LIKE static charges will

• attract each other

• even out in the end

• repel each other

• cause a spark

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Rubbing a balloon on hair is an example of static charge build up created by....

• conduction

• friction

• induction

• hairduction

Two objects with DIFFERENT static charges will

• attract each other

• repel each other

What does the word ‘static’ mean in static electricity?

• stuck

• stationary

• harmless

How did the ancient Greeks make electricity?

• by rubbing amber with fur

• by burning wood

• by rubbing amber with steel wool

If you rub an object with a different material, it becomes

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