Page 40 - science

Materials can float or sink

Some materials float. This means they can stay on top of water.

Other materials sink. They go below the surface of water.

Can you think of a time

you saw something sink?
float Discuss with your partner

what material it was
sink made from.

Investigating floating and sinking

You are going to test which materials

float in water.
Warning! Be careful
Your teacher will give you and your because splashed water
partner some objects. They will be can make the floor slippery.

made out of different materials.

1 Predict which objects will float and which will sink. Think about why

you make your prediction.

2 Gently place each object onto the Were your predictions
water. Let go of the object and correct? What helped you

observe what happens. to decide if each object

3 Draw the objects. Tick those that float. would float or sink?

Draw a line through those that sink.

Heavy objects are more likely to sink. 2 What is it Made of?

Light objects are more likely to float. Key ideas
● Some materials stretch.
Stretch zone
● Some materials float,
Why are clothes made of fabric not wood? others sink.

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■ For more activities, go to Workbook 1 page 41.