Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 475 · 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.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a balloon (d) a white flower
2. 2.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) water with food colour (c) a tall clear glass (d) turmeric powder
3. 3.🛟 Which rule keeps the density tower experiment safe? (a) do not lick the spoon (b) taste each layer (c) pour it on the floor (d) throw the glass
4. 4.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the kind of sugar (b) the amount of water (c) time to dissolve (d) the water temperature
5. 5.True or false: a puddle drying up is evaporation. (a) False (b) True
6. 6.🧺 Which of these is needed for the water cycle bowl? (a) a battery cell (b) a mirror (c) yeast (d) water
7. 7.💧 Which change is this: a pond icing over? (a) freezing (b) evaporation (c) condensation (d) melting
8. 8.🛟 Which of these sinks in water? (a) an ice-cream stick (b) a glass marble (c) a piece of thermocol (d) a ping-pong ball
9. 9.True or false: a balloon is needed for the dissolving test. (a) False (b) True
10. 10.True or false: the balloon goes forward. (a) True (b) False
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) how big we blow it (b) distance it travels (c) the same tape
12. 12.True or false: a magnetic chess set works by magnetism. (a) True (b) False
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) a glass of water (d) a battery cell
14. 14.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
15. 15.🛟 Why should we wipe up spilled oil at once? (a) oil attracts magnets (b) spilled oil is slippery (c) oil turns into honey (d) oil makes it rain
16. 16.True or false: a battery cell is not needed for the balloon rocket. (a) True (b) False
17. 17.True or false: sand does not dissolve in water. (a) False (b) True
18. 18.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) turmeric powder (c) a sink or a bucket (d) a glass of water
19. 19.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of the layers is what we measure. (a) True (b) False
20. 20.🌈 In VIBGYOR, what number colour is red?
21. 21.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is kept the same. (a) False (b) True
22. 22.🧺 Do we need safety scissors for the paper helicopter? (a) not needed (b) needed
23. 23.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
24. 24.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it spread in the water (b) it vanished for ever (c) it sank as sand (d) it became air
25. 25.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
26. 26.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) whether the card stays (b) the same glass (c) how full the glass is
27. 27.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
28. 28.🛟 Why should only a grown-up handle any hot water? (a) it changes colour (b) hot water can scald (c) hot water is magnetic (d) hot water is heavy
29. 29.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) a balloon (c) honey (d) warm water
30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) False (b) True
31. 31.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) a long string (c) a balloon (d) a mirror
32. 32.🧺 Do we need a paper clip for the paper helicopter? (a) needed (b) not needed
33. 33.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we keep it the same (b) we measure it (c) we change it
34. 34.True or false: a battery cell is needed for the water cycle bowl. (a) True (b) False
35. 35.🔮 Predict: you add two more paper clips. How does it fall? (a) it stops in the air (b) it floats up (c) slower (d) faster
36. 36.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) little air left inside (c) the card gets wet (d) water is heavier
37. 37.⚖️ 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 same white paper (c) the same window (d) the same glass
38. 38.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to hide the corks (c) to splash everyone (d) to keep children safe
39. 39.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a balloon (c) safety scissors (d) a ruler
40. 40.🍯 Is a glass marble denser or less dense than water? (a) denser than water (b) less dense than water

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