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Joe hangs two balloons from a desk. When they hang normally, they are close together but they do not touch. He does nothing to the other balloon. What happens when he lets the balloons hang near one another?

• They push one another apart

• They touch one another and pop

• They touch one another and stick together

• They are close together but do not touch

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Carlita hangs two balloons from a desk. When they hang normally, they are close together but they do not touch. Carlita rubs both balloons with a wool cloth. What happens when she lets the balloons hang near one another?

• They push one another apart

• They touch one another and pop

• They touch one another and stick together

• They are close together but do not touch

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Min tapes a piece of string to each of two ping pong balls. he hangs the balls so that they are close to one another but do not touch. Later, he finds that they have pulled together. They are now touching. What could explain why the two balls are touching now?

• They have both lost their charges

• They have gained opposite charges

• They have both gained a positive charge

• They have both gained a negative charge

Tags

NGSS.MS-PS2-3

Cecilia is combing her hair. She notices that her hair and the comb have developed an electric charge. What will happen when she hold the comb near a small, uncharged object?

• The uncharged object will stay where it is

• The uncharged object will stick to the comb

• The uncharged object will be pushed away by the comb

• The uncharged object will gain a charge opposite that of the comb

Tags

NGSS.MS-PS2-3

Curtis uses a wool cloth to give a balloon a negative charge. What will happen when he holds the balloon near the wall and why?

• The balloon will stick to the wall because a negatively charged object is attracted to an uncharged object

• The balloon will stick to the wall because a negatively charged object is attracted to another negatively charged object

• The balloon will not stick to the wall because a negatively charged object is repelled by an uncharged object

• The balloon will not stick to the wall because a negatively charged object is repelled by another negatively charged object

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5