This image shows a worksheet for a science experiment titled "Will it sink or float?". The task is to predict whether each listed object will sink or float in water. To solve this, I need to analyze the physical properties of each object, primarily their density relative to water.
I will go through each object one by one, using my knowledge of physics and material properties to determine if it will sink or float.
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Paper clip: Made of metal (usually steel), which is denser than water. It will sink.
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Eraser: Typically made of rubber or plastic, which are less dense than water. It will float.
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Scissor: Made of metal, similar to the paper clip. It will sink.
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Rock: Naturally dense mineral material. It will sink.
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Coin: Made of metal (often copper, nickel, or steel alloys). It will sink.
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Cotton ball: Made of cotton fibers, which trap a lot of air, making its overall density much lower than water. It will float.
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Crayon: Made of wax, which is less dense than water. It will float.
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Pompom: Made of fluffy yarn or synthetic fibers, which trap a lot of air. It will float.
Based on this analysis, I can now fill out the worksheet.
The completed worksheet should look like this:
| Name of Object | Sink | Float |
| :--- | :--- | :--- |
| Paper clip |
✔ | |
| Eraser | |
✔ |
| Scissor |
✔ | |
| Rock |
✔ | |
| Coin |
✔ | |
| Cotton ball | |
✔ |
| Crayon | |
✔ |
| Pompom | |
✔ |
This solution is based on the principle of buoyancy: an object will float if its average density is less than the density of the fluid it is placed in (in this case, water), and it will sink if its average density is greater.
Parent Tip: Review the logic above to help your child master the concept of floating and sinking worksheet.
