Electrostatic

Question 1

Matter is made up of …

Answer 1

atoms

Question 2

There are two types of charges:

Answer 2

• positive

- negative

Question 3

When electrons are moved from one atom to another, it becomes:

Answer 3

positively charged

Question 4

When atoms become positively charged, it is called:

Answer 4

charge imbalance

Question 5

Nature tends to want ______ balance.

Answer 5

Neutral

Question 6

When a positively charged body comes into contact with another charged material, _____ will go where they are needed.

Answer 6

electrons

Question 7

The imbalance of charges within a surface or material is called:

Answer 7

static electricity or static discharge

Question 8

Static electricity accumulates on an object to form:

Answer 8

an electric charge

Question 9

Charges are ____. The electricity does not move through objects.

Answer 9

Static

Question 10

Conductors allow energy to ______.

Answer 10

pass through

Question 11

What material is most commonly a conductor?

Answer 11

Metal

Question 12

Insulators do/dont create a charge… Which one is it?

Answer 12

dont

Question 13

Do conductors hold a charge?

Answer 13

No. They only act as tunnels for the electrons to get from one material to another.

Question 14

What is the electrostatic series?

Answer 14

A table of substances arranged in the order in which they are electrostatically charged by contact

Question 15

Name the first rule for the electrostatic series.

Answer 15

Opposite charges attract each other

Question 16

Name the second rule for the electrostatic series.

Answer 16

Like charges repel each other

Question 17

Name the third rule for the electrostatic series.

Answer 17

Charged objects attract neutral objects

Question 18

The higher on the series, the _____ the hold on electrons

Answer 18

weaker

Question 19

If rubber is at the bottom of the series, and acetate is at the top, which material will hold onto the electrons

Answer 19

Rubber (whichever material is closer to the bottom will have a stronger hold on the material).

Question 20

Paper vs cotton. Who wins?

Answer 20

Paper will be negative

Cotton will be positive

Question 21

Plastic vs. glass. Who wins?

Answer 21

Plastic will be negative

Glass will be positive

Question 22

Sheep vs. rubber. Who wins?

Answer 22

Sheep will be positive

Rubber will negative

Question 23

Plastic vs. fur. Who wins?

Answer 23

Plastic will be negative

Fur will be positive.

Question 24

How do dryer sheets work?

Answer 24

An anti-static sheet is a small piece of cloth

that contains a waxy compound. Hot air from the dryer vaporizes the waxy compound, which then coats the clothes.

Question 25

The simplest way to remove the net static charge on an object is to put it in contact with what is called: _____

Answer 25

a ground

Question 26

Is water a conductor or an insulator?

Answer 26

Pure water is a good insulator, but water is such a good solvent that it is rarely pure, even when it falls as rain. Water from a faucet contains dissolved substances that make it a fairly good conductor.

Question 27

If you want to avoid charge build-up on your hair, should you use a plastic comb or an aluminum comb?

Answer 27

Use an aluminum comb (conductor) instead of a plastic comb to avoid generating an electric charge on your hair

Question 28

List two materials that are electrical conductors and two materials that are insulators

Answer 28

1. conductors: any metal; uses: copper or aluminum wires, mercury switches
2. insulators: non-metals such as wood, rubber, and plastics; uses: covering for wires

Question 29

How does a lightning rod work?

Answer 29

A lightning rod is a metal sphere or point that is attached to the highest part of a building and connected to the ground.

Question 30

Why do we see lightning?

Answer 30

Negative charges on the bottom of the cloud induce a positive charge on the ground below the cloud by repelling negative charges in the ground.

Question 31

Why do we hear the thunder?

Answer 31

The sudden increase in pressure and temperature from lightning produces rapid expansion of the air within and surrounding the path of a lightning strike.

Question 32

What is the difference between static electricity and current electricity?

Answer 32

static electricity the charges are at rest and they are accumulating on the surface of the insulator. Whereas in current electricity the electrons are moving inside the conductor.

Question 33

State the “Law of Attraction”

Answer 33

opposite charges attract each other

Question 34

State the “Law of Repulsion”.

Answer 34

similar charges repel each other

Question 35

A neutral object has the same number of__________and ________.

Answer 35

protons and electrons

Question 36

A positively charged object has ___________ electrons than protons.

Answer 36

less

Question 37

A negatively charged object has __________ electrons than protons.

Answer 37

more

Question 38

When you rub two different substances together, one gets a _____ charge and one gets a _________ charge.

Answer 38

positive and negative

Question 39

What does the term grounding mean?

Answer 39

Grounding is the act of connecting a conductor, or exposed conductive parts of an installation, to the earth