Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 100 · 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.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a towel (c) a glass of water (d) a sink or a bucket
2. 2.🧺 Which of these is not needed for the water rainbow? (a) yeast (b) a clear glass of water (c) bright sunlight (d) a sunny window
3. 3.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) a sunny window (d) a mirror
4. 4.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we measure it (b) we change it (c) we keep it the same
5. 5.🛟 Why should only a grown-up handle any hot water? (a) hot water is heavy (b) it changes colour (c) hot water can scald (d) hot water is magnetic
6. 6.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
7. 7.🧺 Do we need a pencil for the paper helicopter? (a) not needed (b) needed
8. 8.🍯 Which of these is less dense than water? (a) very salty water (b) honey (c) cooking oil (d) a glass marble
9. 9.🔮 Predict: you fold the two blades the other way. What changes? (a) it turns blue (b) it does not fall (c) it falls upward (d) it spins the other way
10. 10.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we keep it the same (b) we change it (c) we measure it
11. 11.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
12. 12.🎈 When does the balloon rocket stop? (a) when it gets cold (b) when the air runs out (c) when it turns blue (d) it never stops
13. 13.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
14. 14.True or false: a magnet is needed for the paper helicopter. (a) True (b) False
15. 15.🧺 Do we need a magnet for the balloon rocket? (a) not needed (b) needed
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is kept the same. (a) False (b) True
17. 17.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the petals turn bluish (c) the stem turns to ice (d) the water turns green
18. 18.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the tub of water (b) whether it floats (c) the shape of the clay
19. 19.True or false: a balloon is needed for the float-or-sink test. (a) False (b) True
20. 20.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) True (b) False
21. 21.🍯 Is cooking oil denser or less dense than water? (a) less dense than water (b) denser than water
22. 22.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) yeast (c) a sheet of white paper (d) a sunny window
23. 23.🌈 In VIBGYOR, what number colour is violet?
24. 24.🧺 Which of these is needed for the water cycle bowl? (a) a battery cell (b) a magnet (c) water (d) a balloon
25. 25.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
26. 26.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we keep it the same (b) we change it (c) we measure it
27. 27.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) False (b) True
28. 28.True or false: a cotton thread lets water climb up it. (a) True (b) False
29. 29.🧺 Which of these is needed for the paper helicopter? (a) a strip of paper (b) a mirror (c) yeast (d) a battery cell
30. 30.True or false: honey is needed for the density tower. (a) False (b) True
31. 31.🥄 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
32. 32.True or false: table salt does not dissolve in water. (a) True (b) False
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) food colour (d) turmeric powder
34. 34.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) False (b) True
35. 35.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
36. 36.🍯 Is a coin denser or less dense than water? (a) less dense than water (b) denser than water
37. 37.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) True (b) False
38. 38.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
39. 39.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) two clear glasses (c) a clock or timer (d) a balloon
40. 40.🧺 Which of these is not needed for the density tower? (a) cooking oil (b) turmeric powder (c) honey (d) a tall clear glass

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