Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 139 · 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: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
2. 2.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) turmeric powder (d) a stiff postcard
3. 3.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
4. 4.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) two chairs (c) a long string (d) a mirror
5. 5.🔍 Which is the odd one out? (a) a crumpled paper ball (b) a glass marble (c) a stone (d) an open sheet of paper
6. 6.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) turmeric powder (c) cooking oil (d) honey
7. 7.💧 Which of these is melting? (a) ice becoming water (b) making ice lollies (c) wet clothes drying (d) dew on morning grass
8. 8.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar in icy water (c) sugar left unstirred (d) sugar stirred well
9. 9.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) violet (c) blue (d) green
10. 10.🥛 Which of these works by magnetism? (a) a suction hook (b) a medicine dropper (c) a bicycle pump (d) a magnetic chess set
11. 11.True or false: a strip of paper is needed for the paper helicopter. (a) False (b) True
12. 12.True or false: an ice-cream stick sinks in water. (a) False (b) True
13. 13.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) how big we blow it (c) the slope of the string
14. 14.⚖️ 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
15. 15.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is the one thing we change. (a) False (b) True
16. 16.🧺 Do we need a balloon for the paper helicopter? (a) needed (b) not needed
17. 17.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
18. 18.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a steel spoon (d) a piece of chalk
19. 19.🍯 Why does honey sink to the bottom of the glass? (a) it is the densest (b) it is the coldest (c) it is yellow (d) it is the stickiest
20. 20.🧺 Do we need a balloon for the density tower? (a) needed (b) not needed
21. 21.True or false: two clear glasses is not needed for the dissolving test. (a) False (b) True
22. 22.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) water (b) a mirror (c) cling film (d) a small cup
23. 23.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we change it (b) we measure it (c) we keep it the same
24. 24.True or false: the rocket goes backward. (a) False (b) True
25. 25.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: time to reach the floor is kept the same. (a) False (b) True
26. 26.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so the Sun moves (c) so it turns blue (d) so it does not fall
27. 27.🍯 Is honey denser or less dense than water? (a) less dense than water (b) denser than water
28. 28.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) a balloon (c) honey (d) cooking oil
29. 29.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a tub of water (c) a mirror (d) small test objects
30. 30.🍯 Is very salty water denser or less dense than water? (a) less dense than water (b) denser than water
31. 31.🧺 Which of these is not needed for the density tower? (a) a tall clear glass (b) honey (c) a battery cell (d) a spoon
32. 32.🌈 How many colours do we name in a rainbow (VIBGYOR)?
33. 33.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) honey (c) warm water (d) a balloon
34. 34.🧺 Which of these is not needed for the density tower? (a) turmeric powder (b) a tall clear glass (c) water with food colour (d) cooking oil
35. 35.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) a mirror (c) a balloon (d) a teaspoon
36. 36.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) the time we wait (b) the size of the bowl (c) how many drops form (d) the cling film cover
37. 37.🧊 Why does an ice cube float on water? (a) water is sticky (b) ice is very cold (c) ice is magnetic (d) ice is less dense
38. 38.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
39. 39.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we measure it (b) we keep it the same (c) we change it
40. 40.🧺 Which of these is needed for the density tower? (a) a spoon (b) a mirror (c) a balloon (d) yeast

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