Floating and sinking
This Topic is About...
- I will find out that some objects float in water and some objects sink.
- I will sort objects and group them in different ways.
- I will write what I see in a table.
- I will make predictions about what might happen next.
You’re going to be a science explorer!
Key Words
- float
- sink
Tap to Learn the Meanings!
- float: To stay on top of water (or another liquid) instead of going down.
- sink: To go down below the surface of water (or another liquid).
Great job learning new science words!
🛟 Floating and Sinking in Water
Some things float in water. Lots of things sink in water.
🪵 Materials That Float
Some materials, like wood, float on water.
🎈 Air Helps Things Float
Some things filled with air float on water.
Air helps things float
You will need: a balloon, a beach ball, a football, a plastic bottle half full of water, another plastic bottle almost full of water, a tank or bucket of water
Sofia knows that air can help things to float.
Sofia wants to test some things to see if they float.
All of them have air inside them.
Predict which things will float.
Record your predictions.
Now test to see which things float.
Record your results like this.
Record your results:
| Object | Prediction | Draw what happened |
|---|---|---|
| balloon | ||
Follow-up Questions:
How am I doing?
Point to things that float and sink.
Draw two things that float and two things that sink.
Tap to See Answers
- 1: Different objects can float in different ways. Some sit high on the water, and some sink a little but still stay on top.
- 2: Yes. If an object has air inside, it can be lighter for its size, so it is more likely to float.
Well done! You are thinking like a real scientist by predicting, testing, and noticing patterns.