Experiments with water
- 1. EXPERIMENTS WITH WATER C. P. VILLAPENDI
- 2. ● This experiments were made by children five to 7 years old. ● They used their knowledge about water to make predictions. ● Some times their predictions were right, some times were wrong. ● They recorded their discoveries in worksheets ● We related the experiments with nature facts, like water cycle, river pollution...
- 3. This term we have learned many things about water. Let's see...
- 4. Tap water is a liquid: it has the shape of the container The glasses are different but the amount of water is the same
- 5. When you put water in the freezer it becomes ice. Ice is solid.
- 6. You can't take liquid water in your hands, but you can take ice. It's cold!
- 7. When you heat water on the fire, you get steem. Water steem is vapour
- 8. If you cover boiling water with a cold dish you can get rain in the kitchen.
- 9. You can't hold water steam. It flies into the air. Water steam is hot
- 10. Some things float on the water and some sink
- 11. The cork, the wooden spoon, the pencil and the plastic ruler float. The metal spoon, the sharpener and the rubber sink. Some materials are lighter than water some are heavier.
- 12. Some things mix with water, some not. We checked several things:
- 13. Sawdust doesn't mix with water
- 14. Oil never mixes with water, you can stir, and stir... but it always goes up. It floats on the water.
- 15. Oil is very difficult to clean when it reaches rivers or the sea.
- 16. Vinegar mixes with water
- 17. You can mix honey with water, but after a while it settles down
- 18. Sugar melts in water and it disappears
- 19. Salt also melts in water and disappears.
- 20. This way you get salty water
- 21. If you put an egg into fresh water, it sinks.
- 22. If you put it into salty water, it floats.
- 23. We put a few drops of food coloring into fresh water
- 24. Then, we poured the coloured fresh water onto the salty water. What happened? The fresh water floats on the salty water because it is lighter.