Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 563 · 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.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the water layer (b) on top of the oil (c) at the very bottom (d) in the oil layer
2. 2.🧺 Do we need yeast for the density tower? (a) needed (b) not needed
3. 3.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) turmeric powder (c) a long string (d) a balloon
4. 4.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) sunlight (c) water (d) a battery cell
5. 5.🧺 Which of these is not needed for the paper helicopter? (a) yeast (b) safety scissors (c) a strip of paper (d) a ruler
6. 6.True or false: a magnet is needed for the balloon rocket. (a) True (b) False
7. 7.🍯 Is honey denser or less dense than water? (a) denser than water (b) less dense than water
8. 8.🫗 Why does cooking oil float on top of water? (a) oil is less dense (b) oil is heavier (c) oil is hot (d) oil is sticky
9. 9.🛟 Why should only a grown-up handle any hot water? (a) hot water is heavy (b) hot water can scald (c) hot water is magnetic (d) it changes colour
10. 10.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the same glass (b) brightness of rainbow (c) the amount of water
11. 11.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) turmeric powder (d) a clear glass of water
12. 12.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a magnet (c) a pencil (d) a paper clip
13. 13.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a magnet (b) a long string (c) two chairs (d) a balloon
14. 14.🛟 Which is a safe rule for the balloon rocket? (a) aim it at your friend (b) blow it till it bursts (c) put string round a neck (d) keep it away from faces
15. 15.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
16. 16.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) wipe them on walls (d) lick your fingers
17. 17.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) prisms (c) magnets (d) clouds
18. 18.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) brightness of rainbow (b) the time of day (c) the amount of water (d) the same glass
19. 19.True or false: sticky tape is not needed for the balloon rocket. (a) True (b) False
20. 20.🧺 Do we need a mirror for the dissolving test? (a) not needed (b) needed
21. 21.True or false: wet hair drying is freezing. (a) False (b) True
22. 22.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) time to reach the floor (b) the length of the blades (c) the kind of paper (d) the paper clip
23. 23.🥄 Which of these does not dissolve in water? (a) sugar (b) glucose powder (c) sawdust (d) table salt
24. 24.True or false: a cork sinks in water. (a) True (b) False
25. 25.🔍 Which layer is on top in the honey-water-oil tower? (a) coloured water (b) the spoon (c) cooking oil (d) honey
26. 26.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) anyone, without looking (d) a toddler
27. 27.True or false: a battery cell is needed for the paper helicopter. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) a glass marble (b) a paper towel (c) a steel spoon (d) a plastic ruler
29. 29.🎈 When does the balloon rocket stop? (a) when it turns blue (b) when it gets cold (c) it never stops (d) when the air runs out
30. 30.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) cling film (c) a mirror (d) water
31. 31.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is the one thing we change. (a) False (b) True
32. 32.🧺 Do we need water for the water cycle bowl? (a) not needed (b) needed
33. 33.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a drinking straw (c) a medicine dropper (d) a suction hook
34. 34.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the sugar turns to salt (b) all of it dissolves (c) some stays undissolved (d) the water turns solid
35. 35.🍯 Is a cork denser or less dense than water? (a) denser than water (b) less dense than water
36. 36.🧺 Do we need a strip of paper for the paper helicopter? (a) not needed (b) needed
37. 37.🍯 Which of these is denser than water? (a) a pebble (b) an ice cube (c) cooking oil (d) air
38. 38.🔍 Which is the odd one out? (a) an ice-cream stick (b) a feather (c) a cork (d) a pebble
39. 39.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed
40. 40.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we change it (b) we measure it (c) we keep it the same

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