Electrostatic Forces

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

• conduction

• friction

• induction

• hairduction

Static electricity is:

• electricity flowing in a wire

• the buildup of electric charges on an object

• when protons move between objects

Which describes why the balloons are attracted the child's hair.

• The balloons and hair are positively charged so they attract

• The balloons and hair are negatively charged so they attract

• The balloons are negatively charged and the hair is positively charged so they attract

Tags

NGSS.MS-PS2-3

Electrostatic forces are caused by

• the balance of electrical charges on an object

• the imbalance of electrical charges on an object

• the build up of protons in the nucleus of an atom

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NGSS.MS-PS2-3

When a substance gains more electrons, what happens to its overall charge?

• it becomes postive

• it becomes negative

• it stays neutral

Tags

NGSS.MS-PS2-3

If two objects repel, their charges must be

• Positive and Negative

• Postive and Neutral

• Positive and Positive

• Negative and Neutral

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

If you rub a glass rod with a piece of wool, it becomes positively charged. This means it has

• Gained electrons

• Gained protons

• Lost electrons

• Lost protons

Tags

NGSS.MS-PS2-3

Good conductors can easily lose and gain electrons. Which of the following is a good conductor?

• Balloon

• Metal

• Plastic water bottle

• skin

When you rub your feet on carpet and touch something metal, you can feel (and sometimes see) the static discharge. What is happening?

• Electrons are moving to create a charge separation

• Electrons are moving to become neutral

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

If one object is positively charged and the other is negatively charged, what will happen?

• nothing will happen

• they will repel each other

• they will attract each other

• they will push each other away

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5