Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 782 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — density, dissolving, capillary action, light bending, air pressure, push-back, air resistance or condensation. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.True or false: cooking oil is denser than water. (a) False (b) True
2. 2.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) honey (c) a spoon (d) turmeric powder
3. 3.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a magnet (c) turmeric powder (d) a towel for spills
4. 4.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) water is hiding there (c) the cap is sticky (d) air inside pushes back
5. 5.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same glass is kept the same. (a) False (b) True
6. 6.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the drop height”? (a) we keep it the same (b) we change it (c) we measure it
7. 7.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) honey (c) cold water (d) sugar
8. 8.True or false: a paper clip is not needed for the paper helicopter. (a) True (b) False
9. 9.🥄 Which of these does not dissolve in water? (a) glucose powder (b) food colour (c) sugar (d) sand
10. 10.🔍 Which is the odd one out? (a) chalk powder (b) glucose powder (c) cooking oil (d) sand
11. 11.True or false: a tub of water is needed for the float-or-sink test. (a) True (b) False
12. 12.🥄 Which of these does not dissolve in water? (a) baking soda (b) food colour (c) chalk powder (d) table salt
13. 13.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
14. 14.🛟 Which of these sinks in water? (a) a piece of thermocol (b) an empty capped bottle (c) a coin (d) a feather
15. 15.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) yeast (c) turmeric powder (d) a balloon
16. 16.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they fall off at once (c) they turn two colours (d) they stay white
17. 17.🧺 Do we need a mirror for the balloon rocket? (a) needed (b) not needed
18. 18.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) on top of the oil (b) in the oil layer (c) in the water layer (d) at the very bottom
19. 19.🚁 Which of these falls slowly through the air? (a) a steel spoon (b) a crumpled paper ball (c) a stone (d) a feather
20. 20.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is what we measure. (a) True (b) False
21. 21.📘 What does “dense” mean? (a) very colourful (b) heavy for its size (c) very thin (d) very hot
22. 22.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is what we measure. (a) True (b) False
23. 23.🛟 Which of these sinks in water? (a) a ping-pong ball (b) a piece of thermocol (c) an ice cube (d) an iron nail
24. 24.True or false: cooking oil is needed for the density tower. (a) True (b) False
25. 25.True or false: a plastic ruler does not let water climb. (a) True (b) False
26. 26.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a magnet (c) bright sunlight (d) a sheet of white paper
27. 27.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it dissolves (b) it sinks faster (c) it can float (d) it turns to stone
28. 28.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is what we measure. (a) False (b) True
29. 29.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) warm water (c) cold water (d) a balloon
30. 30.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) how many drops form (b) sun or shade (c) the size of the bowl
31. 31.🚁 Dropped from a raised hand, does a coin fall slowly or fast? (a) falls fast (b) falls slowly
32. 32.🧺 Which of these is not needed for the paper helicopter? (a) a strip of paper (b) a ruler (c) yeast (d) safety scissors
33. 33.🧺 Do we need a strip of paper for the paper helicopter? (a) not needed (b) needed
34. 34.True or false: the balloon goes backward. (a) True (b) False
35. 35.🧺 Which of these is not needed for the paper helicopter? (a) a paper clip (b) safety scissors (c) a battery cell (d) a ruler
36. 36.🔍 Which is the odd one out? (a) small pebbles (b) sawdust (c) sand (d) table salt
37. 37.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
38. 38.🔍 You drop a coin into a tub of water. What do you see? (a) it bounces up (b) it sinks (c) it floats (d) it dissolves
39. 39.🍯 Is a glass marble denser or less dense than water? (a) less dense than water (b) denser than water
40. 40.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is the one thing we change. (a) True (b) False

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