Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 33 · 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 battery cell is not needed for the density tower. (a) False (b) True
2. 2.🧺 Do we need a mirror for the float-or-sink test? (a) not needed (b) needed
3. 3.True or false: cold water is needed for the dissolving test. (a) False (b) True
4. 4.🍯 Is an ice cube denser or less dense than water? (a) less dense than water (b) denser than water
5. 5.🔍 Which is the odd one out? (a) a stone (b) a crumpled paper ball (c) a glass marble (d) an open sheet of paper
6. 6.True or false: turmeric powder is needed for the balloon rocket. (a) True (b) False
7. 7.💧 Which of these does not let water climb? (a) a sugar cube (b) a strip of cloth (c) a flower stem (d) a piece of foil
8. 8.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a glass of water (c) a few hours of waiting (d) a white flower
9. 9.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
10. 10.True or false: a results table is not needed for the float-or-sink test. (a) True (b) False
11. 11.🧺 Which of these is not needed for the density tower? (a) yeast (b) honey (c) a tall clear glass (d) cooking oil
12. 12.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) a tall clear glass (c) a battery cell (d) honey
13. 13.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) sugar (c) a comb (d) a balloon
14. 14.🚁 What does the paper helicopter do as it falls? (a) it stays still in air (b) it spins round (c) it turns into a ball (d) it flies upward
15. 15.True or false: a mirror is needed for the paper helicopter. (a) True (b) False
16. 16.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we measure it (b) we keep it the same (c) we change it
17. 17.🧺 Do we need a mirror for the density tower? (a) needed (b) not needed
18. 18.🧺 Which of these is needed for the paper helicopter? (a) a magnet (b) a balloon (c) turmeric powder (d) a strip of paper
19. 19.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) a balloon (c) warm water (d) honey
20. 20.⚖️ 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 measure it (b) we change it (c) we keep it the same
21. 21.🥄 Why does sugar dissolve faster in warm water? (a) cold water is wet (b) particles move faster (c) sugar likes the dark (d) warm water is thicker
22. 22.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) water (c) air (d) smoke
23. 23.🫗 Why does cooking oil float on top of water? (a) oil is hot (b) oil is less dense (c) oil is sticky (d) oil is heavier
24. 24.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) False (b) True
25. 25.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) fewer drops form (b) the bowl freezes (c) the water turns red (d) more drops form
26. 26.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) water splits the light (c) the glass is painted (d) the paper makes colours
27. 27.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is the one thing we change. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) a magnetic chess set (b) a bicycle pump (c) a compass needle (d) a magnetic pin holder
29. 29.🔍 Which is the odd one out? (a) a plastic ruler (b) a flower stem (c) a piece of foil (d) a steel spoon
30. 30.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) it looks nicer (c) the card gets wet (d) little air left inside
31. 31.⚖️ 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) sun or shade (b) how many drops form (c) the size of the bowl (d) the amount of water
32. 32.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) a magnet (c) water with food colour (d) honey
33. 33.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) turmeric powder (c) a spoon (d) water with food colour
34. 34.📘 What do we call light bending as it passes from air into water? (a) reflection (b) evaporation (c) magnetism (d) refraction
35. 35.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we measure it (c) we change it
36. 36.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) honey (c) yeast (d) a tall clear glass
37. 37.🧺 Which of these is needed for the paper helicopter? (a) a battery cell (b) turmeric powder (c) a mirror (d) a pencil
38. 38.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a results table (c) a tub of water (d) a magnet
39. 39.🔍 You drop a coin into a tub of water. What do you see? (a) it floats (b) it dissolves (c) it sinks (d) it bounces up
40. 40.True or false: an ice cube sinks in water. (a) False (b) True

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