Why is it hard work to walk through water? - PowerPoint PPT Presentation

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Why is it hard work to walk through water?

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Why is it hard work to walk through water?

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  1. Why is it hard work to walk through water?

  2. Why are fish the shape they are?

  3. Why are boats and ships the shape they are?

  4. The man is pulling the oar to push the boat forwards. The boat is moving forwards in this direction. The water feels as if it is pushing you back. This is water resistance.

  5. What would happen if I dropped a ball of Blu-tac into these three containers? Empty Water Wallpaper Paste

  6. I want to create a fair test using this equipment to find out if the shape of the blu-tac makes a difference to the speed at which it falls through the water. Container of water Clock or timer Blu-tac or plasticine

  7. Fair Test What we are going to find out: What we are going to measure: What we are going to change: What we are going to keep the same:

  8. Which shape was the slowest? Which shape was the fastest? How does the shape make a difference to the speed of the fall? WHY?