Static Electricity

Question 0

Charge of a proton:

Answer 0

+1

Question 1

Mass of a proton:

Answer 1

1

Question 2

Mass of a neutron:

Answer 2

1

Question 3

Charge of a neutron:

Answer 3

0

Question 4

Mass of an electron:

Answer 4

1/2000

Question 5

Charge of an electron:

Answer 5

-1

Question 6

What causes a build up of static electricity:

Answer 6

Friction

Question 7

Static electricity - the process:

Answer 7

Two insulating materials are rubbed together, electrons will go from to the other

This leaves a positive static charge on one and a negative static charge on the other

Only electrons can move

Which way the electrons are transferred depends on the two materials involved

Question 8

What do like charges do:

Answer 8

Like charges repel

Question 9

What do unlike charges do:

Answer 9

Unlike charges repel

Question 10

What can static electricity cause:

Answer 10

Little sparks or shocks

Question 11

Clothing crackles:

Answer 11

Synthetic clothing are dragged over each other, electrons are removed, leaving static charges on both parts.

This leads to an attraction and little sparks as the charges rearrange themselves

Question 12

Car shocks:

Answer 12

Static charge build up between clothes and synthetic car seat - the friction between the two causes electrons to move

When out of the car and touch the metal door the charge flows and can give a electric shock

Question 13

Shocks from door handles:

Answer 13

Walk on a nylon carpet wearing shoes with insulating soles, transfer of electrons from the carpet to the person and charge will build up on the body.

If you then touch a metal door handle, the charge flows to the conductor and you get a little shock

Question 14

Balloons can stick to walls:

Answer 14

Rubbing a balloon against your hair causes electrons to be transferred to the balloon, leaving it with a negative charge.

If you then hold it up against a wall it will stick as the negative charges on the balloon repel the negative charges on the surface of the wall.

This leaves a positive charge on the surface which attracts the balloon.

Question 15

Charged comb can pick up small pieces of paper by:

Answer 15

Run a comb through your hair, electrons will be transferred to the comb and it will become negatively charged.

Can then be used to pick up little pieces of paper, even though they have no charge it causes a induction

Question 16

Lightning is caused by a build up of static charge by:

Answer 16

Rain drops and ice bump together inside storm clouds, knocking off electrons and leaving the top of the cloud positively charged and the bottom of the cloud negatively charged

This creates a huge voltage and big spark

Question 17

Sticking a balloon to the wall:

Answer 17

Friction causes electrons to be transferred on to the balloon and become negatively charged

The negative charge on the balloon repels the electrons in the surface of the wall so they move away

This induces a positive charge in the surface of the wall and so the wall and balloon attract