Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 803 · 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 stone falls fast through the air. (a) True (b) False
2. 2.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) a balloon (c) water with food colour (d) honey
3. 3.True or false: air from the balloon goes backward. (a) False (b) True
4. 4.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is kept the same. (a) True (b) False
5. 5.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is what we measure. (a) False (b) True
6. 6.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) play near a deep pond (c) leave water on the floor (d) wipe up spills at once
7. 7.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
8. 8.🛟 Which is a safe rule for the balloon rocket? (a) aim it at your friend (b) put string round a neck (c) blow it till it bursts (d) keep it away from faces
9. 9.🧺 Which of these is needed for the water cycle bowl? (a) turmeric powder (b) ice cubes (c) yeast (d) a balloon
10. 10.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) yeast (c) a tub of water (d) small test objects
11. 11.True or false: a mirror is not needed for the balloon rocket. (a) False (b) True
12. 12.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) on a bed (d) over a sink or bucket
13. 13.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) True (b) False
14. 14.🛟 Does a ping-pong ball float or sink in water? (a) sinks (b) floats
15. 15.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
16. 16.🛟 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
17. 17.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we keep it the same (b) we change it (c) we measure it
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) time to dissolve (b) the kind of sugar (c) the amount of sugar (d) the amount of water
19. 19.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we measure it (b) we change it (c) we keep it the same
20. 20.🧺 Which of these is needed for the dissolving test? (a) a comb (b) a clock or timer (c) a magnet (d) cotton wool
21. 21.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is kept the same. (a) True (b) False
22. 22.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is what we measure. (a) False (b) True
23. 23.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) cooking oil (c) honey (d) a mirror
24. 24.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) two chairs (c) a magnet (d) a drinking straw
25. 25.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to catch any spills (c) to grow plants (d) to cool the glass
26. 26.🛟 Which of these sinks in water? (a) an iron nail (b) a dry leaf (c) an empty capped bottle (d) a piece of thermocol
27. 27.🧺 Which of these is needed for the paper helicopter? (a) a strip of paper (b) a magnet (c) yeast (d) turmeric powder
28. 28.🌈 In VIBGYOR, what number colour is green?
29. 29.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a small rainbow (c) snow falling (d) a shadow of ice
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) a white flower (d) a magnet
31. 31.⚖️ 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) True (b) False
32. 32.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a glass marble (d) a strip of cloth
33. 33.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is what we measure. (a) False (b) True
34. 34.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns all red (c) it turns brighter (d) the rainbow fades
35. 35.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
36. 36.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
37. 37.🧺 Which of these is not needed for the dissolving test? (a) a clock or timer (b) sugar (c) a balloon (d) a teaspoon
38. 38.True or false: sugar dissolves in water. (a) False (b) True
39. 39.🍯 Is a glass marble denser or less dense than water? (a) denser than water (b) less dense than water
40. 40.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the shape of the clay (b) the amount of clay (c) the tub of water (d) the kind of clay

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