Electrostatic Force

When you walk across a carpet in socks, they pick up charges. Later, there aren't any charges in your socks. what probably happened to the charges?

• The charges disappeared.

• The charges switched signs.

• The charges transferred to another object.

• The charges broke apart into smaller particles.

Tags

NGSS.MS-PS2-5

What happens when a rubber rod is rubbed with a piece of fur, giving the rod a negative charge?

• Negative charges are moved from the rod to the fur.

• Negative charges are moved from the fur to the rod.

• Negative charges are added to the rod and the fur remains neutral.

• Positive charges are removed from the rod, and the fur remains neutral.

Tags

NGSS.MS-PS2-3

When you rub a neutral balloon on neutral carpet, the balloon will attract hair. What happened to the electric charge of the balloon?

• Nothing, the hair's charge changed.

• The charge of the balloon changed.

• It became opposite.

• It stays neutral.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which has a charge with the greatest magnitude?

• An object with a charge of 0.

• An object with a charge of -2

• An object with a charge of +2

• An object with a charge of -3

What is an electric charge?

• A physical property that results in static electricity.

• The attraction and repulsion of objects.

• Something you plug in.

• A constant state.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What types of charges attract?

• Positive and Positive

• Positive and Neutral

• Negative and Neutral

• Positive and Negative

Lightning occurs because ___.

• the negative charges at the bottom of clouds are attracted to the positive charges on the ground.

• the positive charges at the bottom of clouds are attracted to the negative charges on the ground.

• the positive and negative charges inside clouds are attracted to each other

• All of these reasons are correct.

Tags

NGSS.MS-PS2-3

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

• Your finger becomes negatively charged

Tags

NGSS.MS-PS2-5

If an object has the same number of positive and negative charges, its electrical charge is...

• positive

• negative

• neutral or no charge

• opposite

The electrostatic force between charged particles depends on Coulomb's constant (a)   , the charges (b)   and (c)   , and the distance (d)   between their centers.

• k

• q1

• q2

• d

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5