Understanding Static Electricity and Electrostatic Fields

Ms Jo Jo 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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If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?

• positive charge.

• negative charge.

• neutral charge

• charge at all

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What happens when you touch a metal doorknob after rubbing your shoes on the carpet?

• The doorknob sends a burst of electric current into your body

• Millions of electrons go from your finger into the doorknob

• The doorknob sends millions of electrons into your finger

• our finger becomes negatively charged

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An object becomes postiively charged when which of the following occurs?

• loses electrons

• gains electrons

• loses protons

• gains neutrons

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The ​ (a)   charges in the girl's hair are attracted to the negative charge in the balloon.

• positive

• negative

• neutral

• static

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Rubbing the balloon on the sweater allows more electrons to move onto the balloon. This gives the ballon a ​ (a)   charge.

• negative

• positive

• neutral

• powerful

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The balloon will move toward the

(a)   because the ​ (b)   charges on the balloon are ​ (c)   the ​ (d)   charged on the sweater.​ ​

• sweater

• negative

• attached to

• positive

• repelled by

• balloon

• wall

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NGSS.MS-PS2-3

The girl's hair and the comb are attracting  one another.  The hair and the comb have

• opposite charges

• like charges

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An object becomes charged when the atoms in the object gain or lose

• electrons

• protons

• neutrons

• all of the above

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What types of charges attract?

• Positive and Positive

• Positive and Neutral

• Negative and Neutral

• Positive and Negative