Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 990 · 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.🧺 Which of these is not needed for the density tower? (a) a tall clear glass (b) cooking oil (c) water with food colour (d) a mirror
2. 2.🛟 Why should you not over-blow the balloon? (a) it can pop loudly (b) it changes colour (c) it turns into a kite (d) it gets too heavy
3. 3.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we measure it (b) we change it (c) we keep it the same
4. 4.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a magnet (b) a paper clip (c) a pencil (d) a strip of paper
5. 5.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) yeast (c) sticky tape (d) a balloon
6. 6.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a battery cell (b) a strip of paper (c) a pencil (d) safety scissors
7. 7.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
8. 8.True or false: a balloon is needed for the water rainbow. (a) True (b) False
9. 9.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a results table (c) a towel for spills (d) a magnet
10. 10.🛟 What should you do with popped balloon pieces? (a) throw them away safely (b) chew them (c) keep them in your mouth (d) give them to a baby
11. 11.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) small test objects (c) yeast (d) a battery cell
12. 12.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the kind of flower (b) time for colour to show (c) the room it stands in (d) the length of the stem
13. 13.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) near a plug point (c) over a laptop (d) on a bed
14. 14.🧺 Which of these is not needed for the water cycle bowl? (a) a big bowl (b) ice cubes (c) a balloon (d) water
15. 15.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) a sheet of white paper (d) a magnet
16. 16.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we keep it the same (b) we change it (c) we measure it
18. 18.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
19. 19.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it turns all red (c) the rainbow fades (d) it floats away
20. 20.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is what we measure. (a) False (b) True
21. 21.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) not at all (b) faster (c) slower (d) the same
22. 22.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) the length of the blades (b) the paper clip (c) time to reach the floor
23. 23.🧺 Which of these is not needed for the paper helicopter? (a) a ruler (b) turmeric powder (c) safety scissors (d) a pencil
24. 24.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) the same card (b) whether the card stays (c) the same glass (d) how full the glass is
25. 25.🛟 Which is a safe rule for the balloon rocket? (a) put string round a neck (b) aim it at your friend (c) blow it till it bursts (d) keep it away from faces
26. 26.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is what we measure. (a) True (b) False
27. 27.🛟 Does an ice cube float or sink in water? (a) floats (b) sinks
28. 28.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the amount of sugar (b) the kind of sugar (c) the amount of water (d) the water temperature
29. 29.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
30. 30.🛟 What should you do with wet floors after the experiment? (a) wipe them dry (b) leave them wet (c) pour more water (d) slide on them
31. 31.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) turmeric powder (c) a paper clip (d) a ruler
32. 32.🥄 Why does sugar dissolve faster in warm water? (a) sugar likes the dark (b) cold water is wet (c) particles move faster (d) warm water is thicker
33. 33.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we keep it the same (b) we measure it (c) we change it
34. 34.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
35. 35.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) it rains on them (d) through tiny stem tubes
36. 36.🛟 Why should we wipe up spilled oil at once? (a) oil attracts magnets (b) oil turns into honey (c) oil makes it rain (d) spilled oil is slippery
37. 37.🔍 Which is the odd one out? (a) a rubber eraser (b) a glass marble (c) a sugar cube (d) a piece of foil
38. 38.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a glass of water (c) a magnet (d) a towel
39. 39.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the cap is sticky (c) the bottle is magnetic (d) water is hiding there
40. 40.True or false: a mirror is needed for the density tower. (a) False (b) True

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