Buoyancy Basics Worksheet
Explore the concept of buoyancy with this engaging worksheet for 3rd graders, featuring questions on floating and sinking.
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Buoyancy Basics
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Read each question carefully and answer to the best of your ability. This worksheet is about how objects float or sink in water.
1. What makes an object float in water?
It is very heavy.
It is less dense than water.
It is made of metal.
It has a rough surface.
2. Which of these objects is most likely to sink?
A small wooden block
A plastic toy boat
A metal key
A rubber duck
3. When an object pushes water away, it is called .
4. Objects that are lighter than the water they push away will .
5. Objects that are heavier than the water they push away will .
6. All heavy objects sink.
True
False
7. A boat floats because it displaces a lot of water.
True
False
8. Look at the image below. Why does the boat float?
Use the words below to complete the sentences.
9. The upward push of water on an object is called .
10. If an object is more than water, it will sink.
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