Using materials

The picture below shows a handphone.

Glass is used to make the screen because it ...

• is transparent.

• is flexible.

• can sink in water.

How can Alice check whether her pencil case is waterproof?

• Check if it can bend.

• See how many weights can hang on it.

• Check if it can absorb water.

• See if light can pass through.

Which of the following materials is the most suitable to make a school bag?

• Glass

• Metal

• Fabric

• Ceramic

Which one of the following objects cannot be classified under the same group as the other three?

• rock

• pillow

• gold ring

• metal ruler

Tick all the properties of glass.

• Flexible

• Sinks in water

• Transparent

Tick all the properties of metal.

• Strong

• Transparent

• Waterproof

• Floats in water

Tick all the properties of rubber.

• Flexible

• Transparent

• Waterproof

The bag in the picture is made of plastic. Tick all the reasons why the plastic is used.

• The plastic is flexible.

• The plastic is strong.

• The plastic can float on water.

• The plastic is transparent.

Which is the correct explanation for the material used to make the floor tiles in the toilet?

• Ceramic because it is waterproof.

• Metal because it sinks in water.

• Fabric because it is flexible.

• Glass because it is transparent.

Tick all the properties of fabric.

• Strong

• Flexible

• Transparent