Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 656 · 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.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) sun or shade (b) the size of the bowl (c) how many drops form
2. 2.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a steel spoon (c) a glass marble (d) a piece of chalk
3. 3.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
4. 4.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it dissolves (b) it can float (c) it sinks faster (d) it turns to stone
5. 5.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is the one thing we change. (a) False (b) True
6. 6.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls fast (b) falls slowly
7. 7.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it spread in the water (b) it became air (c) it vanished for ever (d) it sank as sand
9. 9.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) magnetism (c) reflection (d) refraction
10. 10.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
11. 11.🔍 Which is the odd one out? (a) a glass marble (b) an ice cube (c) honey (d) very salty water
12. 12.🧺 Do we need a balloon for the dissolving test? (a) needed (b) not needed
13. 13.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it will not break (d) it is heavier
14. 14.🧺 Which of these is not needed for the water rainbow? (a) a magnet (b) a sheet of white paper (c) a clear glass of water (d) bright sunlight
15. 15.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes forward (b) goes backward
16. 16.True or false: a magnet is not needed for the float-or-sink test. (a) True (b) False
17. 17.True or false: sugar in warm water dissolves faster. (a) False (b) True
18. 18.🎈 When does the balloon rocket stop? (a) when it turns blue (b) when the air runs out (c) when it gets cold (d) it never stops
19. 19.🛟 Which of these floats on water? (a) a steel spoon (b) a ping-pong ball (c) a coin (d) a pebble
20. 20.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
21. 21.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) a mirror (c) a balloon (d) a magnet
22. 22.🚀 Which of these goes backward? (a) air from the balloon (b) the rowing boat (c) the swimmer (d) the balloon
23. 23.🧺 Which of these is needed for the water cycle bowl? (a) a balloon (b) a mirror (c) yeast (d) a big bowl
24. 24.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a clear glass of water (c) yeast (d) a magnet
25. 25.True or false: an ice cube is less dense than water. (a) True (b) False
26. 26.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
27. 27.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a sink or a bucket (c) a towel (d) a stiff postcard
28. 28.🚁 Dropped from a raised hand, does an open sheet of paper fall slowly or fast? (a) falls slowly (b) falls fast
29. 29.🔍 Which is the odd one out? (a) a ball of clay (b) an ice-cream stick (c) a coin (d) a steel spoon
30. 30.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) a mirror (c) a long string (d) a balloon
31. 31.True or false: a results table is not needed for the float-or-sink test. (a) True (b) False
32. 32.🧺 Which of these is not needed for the density tower? (a) water with food colour (b) honey (c) turmeric powder (d) cooking oil
33. 33.🥚 A fresh egg sinks in plain water. What makes it float? (a) lots of salt stirred in (b) a few ice cubes (c) more plain water (d) a little shaking
34. 34.🧺 Do we need turmeric powder for the water cycle bowl? (a) needed (b) not needed
35. 35.🧺 Which of these is not needed for the paper helicopter? (a) a paper clip (b) a pencil (c) a strip of paper (d) a battery cell
36. 36.🛟 What should you do after handling food colour? (a) wash your hands (b) lick your fingers (c) wipe them on walls (d) rub your eyes
37. 37.🛟 Which rule keeps the density tower experiment safe? (a) do not lick the spoon (b) pour it on the floor (c) throw the glass (d) taste each layer
38. 38.🛟 How should you check if the sugar has dissolved? (a) taste it (b) poke it with a finger (c) smell it closely (d) look for leftover grains
39. 39.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) whether the card stays (b) the way we turn it (c) the same glass (d) how full the glass is
40. 40.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a magnet (c) a results table (d) a tub of water

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