(Electricity 01) Static Electricity

Question 1

What is static electricity?

Answer 1

Electric charge that remains “static” or doesn’t move.

Involves the transfer of electric charge by rubbing or friction (e.g. walking across a carpet, combing your hair)

Question 2

What is electrostatics?

Answer 2

The study of electric charge.

Question 3

How can you create a static charge?

Answer 3

Friction.

Question 4

What is the law of attraction?

Answer 4

When a negatively charged object is brought close to a positively charged object, the two objects attract each other.

OPPOSITES ATTRACT

Question 5

What is the law of repulsion?

Answer 5

When two objects with the same charge are brought together, they repel.

SAME CHARGE = NO ATTRACTION

Question 6

Positive objects have a . .

Answer 6

Weak hold on electric charges.

Question 7

Negative objects have a . .

Answer 7

Strong hold on electric charges.

Question 8

T or F: An object that has more protons than electrons is positively charged.

Answer 8

True.

Question 9

T or F: An object that has fewer protons than electrons is positively charged.

Answer 9

False.

Question 10

T or F: An object that has more electrons than protons is positively charged.

Answer 10

False - it is negatively charged.

Question 11

What is friction?

Answer 11

Transfer of electrons, gaining or losing electrons.

Question 12

Why are the charges static?

Answer 12

The charges are static because they remain fixed in one location on the surface of the object.

Question 13

What charge does an object with a deficit of electrons (fewer than protons) have?

Answer 13

A positive charge.

Question 14

What charge does an object with an excess of electrons have?

Answer 14

A negative charge.

Question 15

What charge does a proton have?

Answer 15

Positive charge.

Question 16

What charge do neutrons have?

Answer 16

No charge.

Question 17

What charge do electrons have?

Answer 17

Negative charge.

Question 18

What kind of materials tend to gain electrons?

Answer 18

Teflon, plastic wrap, rubber balloon.

Question 19

What kind of materials tend to lose electrons?

Answer 19

Human hand, glass, human hair, nylon.

Question 20

Atoms can become charged when electrons move from one object to another.

What is the electric charge that builds up on an object?

Answer 20

static charge or static electricity.

Question 21

What is induction?

Answer 21

Transferring an electric charge from one substance to another without direct contact.

When a charged object is close to a neutral object, the electric field of the charged object produces a force on the neutral object.

The charged object causes (induces) electrons in the neutral object to move.

Question 22

What is Grounding?

Answer 22

Groundingis connecting the charged object to the earth so electrons can travel to the ground.

Question 23

What is an electrical discharge?

Answer 23

When electric charges are transferred very quickly.

Ex. sparks, lightning

Question 24

What is an electric field?

Answer 24

A property of the space around a charged object, where the effectof its charge can be felt by other objects.

Question 25

Objects with greater net charge have ______

Answer 25

Stronger electric fields.