Static electricity

Question 1

What is the build up of static caused by?

Answer 1

Friction

Question 2

What happens when certain insulating materials are rubbed together?
What does this leave on the two items?

Answer 2

Negatively charged electrons will be scraped off one and deposited on the other
A positive static charge on one and a negative on the other

Question 3

Electrically charged objects attract ….

Answer 3

small objects near them

Question 4

When a polythene rod is rubbed with a duster which way do the electrons move?
What’s the rhyme - way of remembering it?
What happens to the charges of the objects from neutral?

Answer 4

Electrons move from the duster to the rod
‘E’thene want’s the ‘E’lectrons
The rod is now negative and the cloth is positive

Question 5

When an acetate rod is rubbed with a duster which way do the electrons move?
What’s the rhyme - way of remembering it?
What happens to the charges of the objects from neutral?

Answer 5

Electrons move to the duster
Acetate - ace’take’ the electrons - it says
The rod is now positive and the cloth is negative

Question 6

What is a positive static charge caused by?

What happens to the charge of the object?

Answer 6

Electrons moving away from the object.

The object loses some negative charge, so it becomes equally positively charged

Question 7

What happens when two charged objects are brought next to each other?
Two things with opposite charges….
Two things with the same charge….
The further apart the objects are the …. these forces are

Answer 7

They exert a force on one another
Attract
Repel each other
Weaker

Question 8

Electrical charges can move easily through what?

Answer 8

Conductors

Question 9

What are good conductors?

Answer 9

Metals