Materials.

The Hardness of a material is the ability of the material to --- scratches.

• a) heat

• b) allow

• c) return

• d) withstand

The Elasticity of a material is the ability of the material to --- to its original shape and size after being stretched.

• a) use

• b) allow

• c) return

• d) withstand

The Heat Conductivity of a material is the --- of the material to allow heat to pass through it.

• a) ability

• b) mobility

• c) elasticity

• d) loyalty

The Electrical Conductivity of a material is the ability of the material to allow electricity to --- it.

• a) stand up

• b) pass through

• c) write down

• d) fly away

Can a coin scratch a tree?

• a) No

• b) Yes

• c) I don't know

• d) May be

What materials are the best conductors of electricity?

• a) Rubber

• b) Sea Water

• c) Metal

• d) Plastic

--- is a material which doesn't allow heat or electricity to go though it

• a) Insulator

• b) Conductor

• c) Elasticity

• d) Hardness

Which objects CANNOT conduct heat?

• a) Paper

• b) Metal

• c) Wood

• d) Plastic

What are the objects that cannot conduct heat known as?

• a) Insulators

• b) Copper

• c) Iron

• d) Aluminium

Give one example that can replace the copper wire to give the same result - to conduct electricity.

• a) an Eraser

• b) a Metal Spoon

• c) a Pencil

• d) a Book