11.1-11.10-Static electricity

Question 1

How can an insulator be charged?

Answer 1

Through friction

Question 2

How can an insulator be charged through friction?

Answer 2

Through the transfer of electrons

Question 3

What is the charge of the material gaining electrons?

Answer 3

Negative

Question 4

What is the charge of the material that loses electrons?

Answer 4

Positive

Question 5

What happens to electrons when you get a shock from an object?

Answer 5

Electrons jump from one object to another

Question 6

What happens to electrons in lightning?

Answer 6

.The charge jumps from a highly negative object to a highly positive object
.Lightning occurs when the charge difference becomes so great a massive spark jumps across to balance the charge

Question 7

How does Earthing remove excess charge by movement of electrons?

Answer 7

.Allows electrons to flow into the Earth removing excess charge
.This allows materials to stay neutral

Question 8

How do insecticide sprayers use electrostatic forces?

Answer 8

.The spray droplets are given a charge and repel each other allowing the droplets to spread evenly

Question 9

What are the dangers of sparking in everyday life (Like fuelling cars)?

Answer 9

.If a charge builds up and a spark forms it could ignite and cause a massive explosion

.As fuel passes through the hose to the vehicle a charge can build up
.When it is too large a spark may form
.A resulting spark may ignite the fuel
.The hoses are earthed to stop this from happening

Question 10

What is an electric field?

Answer 10

A region where an electric charge experiences a force

Question 11

In what direction do electric field diagrams point in?

Answer 11

In a direction a positive charge would go

Question 12

How does an electric field help explain static electricity?

Answer 12

.A charged object creates an electric field around itself so they can interact with charge particles