Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 67 · 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 does not dissolve in water? (a) sugar (b) cooking oil (c) glucose powder (d) table salt
2. 2.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is the one thing we change. (a) False (b) True
3. 3.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
4. 4.True or false: wet hair drying is condensation. (a) True (b) False
5. 5.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a cotton thread (d) a rubber eraser
6. 6.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) yeast (c) a balloon (d) a mirror
7. 7.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the size of the bowl is kept the same. (a) False (b) True
8. 8.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
9. 9.True or false: a balloon is needed for the float-or-sink test. (a) False (b) True
10. 10.🍯 Is a coin denser or less dense than water? (a) denser than water (b) less dense than water
11. 11.🚁 Dropped from a raised hand, does a stone fall slowly or fast? (a) falls slowly (b) falls fast
12. 12.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the paper clip”? (a) we change it (b) we keep it the same (c) we measure it
13. 13.💧 Which of these is melting? (a) ice becoming water (b) water becoming ice (c) wet clothes drying (d) dew on morning grass
14. 14.🥄 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
15. 15.⚖️ 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 glass (b) whether the card stays (c) the same card (d) the way we turn it
16. 16.🧺 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
17. 17.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
18. 18.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
19. 19.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) blue (c) red (d) violet
20. 20.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it does not fall (c) so it gets hot (d) so the Sun moves
21. 21.True or false: a flower stem does not let water climb. (a) True (b) False
22. 22.True or false: a battery cell is needed for the balloon rocket. (a) False (b) True
23. 23.True or false: a big bowl is not needed for the water cycle bowl. (a) False (b) True
24. 24.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a glass marble (c) a steel spoon (d) a sugar cube
25. 25.🧺 Which of these is needed for the water cycle bowl? (a) turmeric powder (b) a small cup (c) a magnet (d) a mirror
26. 26.💧 Which of these does not let water climb? (a) a piece of chalk (b) a flower stem (c) a steel spoon (d) a strip of cloth
27. 27.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) stare at the Sun (d) look at it through glass
28. 28.True or false: a towel for spills is not needed for the float-or-sink test. (a) True (b) False
29. 29.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is what we measure. (a) False (b) True
30. 30.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is kept the same. (a) False (b) True
31. 31.🧺 Which of these is needed for the water cycle bowl? (a) a magnet (b) water (c) a mirror (d) a battery cell
32. 32.🛟 Why should you not over-blow the balloon? (a) it changes colour (b) it turns into a kite (c) it gets too heavy (d) it can pop loudly
33. 33.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) gardening shears (c) safety scissors (d) sharp kitchen shears
34. 34.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to win a prize (c) to keep children safe (d) to hide the corks
35. 35.True or false: a battery cell is not needed for the float-or-sink test. (a) False (b) True
36. 36.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) in front of you (c) under the ground (d) behind you
37. 37.🧺 Which of these is not needed for the water cycle bowl? (a) sunlight (b) a big bowl (c) cling film (d) a magnet
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) food colour (d) turmeric powder
39. 39.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of pouring (b) how much of each liquid (c) the order of the layers
40. 40.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns all red (c) the rainbow fades (d) it turns brighter

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