0893 Y7 U9 9.4 Conductors and insulators

Match the following

Groups:

(a) electrical conductor

,

(b) electrical insulator

• air

• metal forl

• wooden comb

• plastic spoon

• copper wire

• aluminium foil

We can use _____ to make electric wire (choose 2)

• aluminium
• steel

• wood

• plastic

When a conductor is connected to the circuit, the lamp will light because a conductor allows (a)   to flow and complete the circuit.

Student A connected an object into the circuit. The lamp does not light. What are the TWO possible reasons for this result?

• the object is an insulator

• the object is a conductor

• the cell is not working

• the crocodile clips are insulator

An insulator (a)   electron flow. In insulator, electrons are ​ (b)   . A conductor ​ (c)   electron flow. In conductor, electrons are ​ (d)   .

• inhibits
• allows
• free to move
• not free to move

Match the statements to the picture

a

b

pin is made of metal

pin is made from plastic

body is made from plastic

body is made of metal

The wire is coated in plastic to protect people from ____ ____.

(a)