Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 417 · 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 use a rough, thick string instead of a smooth one. (a) more friction, less far (b) no change at all (c) it goes faster (d) less friction
2. 2.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
3. 3.⚖️ 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 change it (b) we measure it (c) we keep it the same
4. 4.🛟 Why should only a grown-up handle any hot water? (a) hot water can scald (b) hot water is magnetic (c) it changes colour (d) hot water is heavy
5. 5.True or false: wet clothes drying is condensation. (a) False (b) True
6. 6.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) cold water (c) a clock or timer (d) cotton wool
7. 7.⚖️ 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) the amount of water (b) the size of the bowl (c) sun or shade (d) how many drops form
8. 8.⚖️ 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
9. 9.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) a clear glass of water (d) a mirror
10. 10.True or false: sugar in warm water dissolves faster. (a) True (b) False
11. 11.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.🚁 Which of these falls fast through the air? (a) a fluff of cotton (b) a coin (c) an open sheet of paper (d) a paper helicopter
13. 13.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is kept the same. (a) False (b) True
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the length of the stem (b) the room it stands in (c) the amount of water (d) the kind of flower
15. 15.🚀 Which of these goes backward? (a) the rocket (b) water a swimmer pushes (c) the rowing boat (d) the swimmer
16. 16.🧺 Which of these is not needed for the balloon rocket? (a) a mirror (b) a balloon (c) a drinking straw (d) a long string
17. 17.🔍 Which is the odd one out? (a) cooking oil (b) small pebbles (c) sawdust (d) baking soda
18. 18.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) bright sunlight (c) a sunny window (d) yeast
19. 19.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is what we measure. (a) True (b) False
20. 20.🥄 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
21. 21.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) spilled oil is slippery (c) oil turns into honey (d) oil attracts magnets
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) food colour (c) a white flower (d) a glass of water
23. 23.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
24. 24.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a mirror (c) a few hours of waiting (d) a balloon
25. 25.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
26. 26.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we measure it (b) we change it (c) we keep it the same
27. 27.🛟 Does a piece of thermocol float or sink in water? (a) sinks (b) floats
28. 28.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a teaspoon (b) two clear glasses (c) sugar (d) a magnet
29. 29.🔍 Which is the odd one out? (a) a piece of chalk (b) a strip of cloth (c) a paper towel (d) a rubber eraser
30. 30.True or false: powdered sugar dissolves faster. (a) False (b) True
31. 31.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) small test objects (c) turmeric powder (d) a towel for spills
32. 32.🧺 Do we need a spoon for the density tower? (a) needed (b) not needed
33. 33.🍯 Is a cork denser or less dense than water? (a) denser than water (b) less dense than water
34. 34.True or false: a glass marble falls slowly through the air. (a) False (b) True
35. 35.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) an open sheet of paper (b) a stone (c) a crumpled paper ball (d) a glass marble
37. 37.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
38. 38.🥄 Does powdered sugar dissolve faster or slower? (a) faster (b) slower
39. 39.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we change it (b) we keep it the same (c) we measure it
40. 40.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) the water increases (b) it turns to ice (c) some water evaporates (d) it turns to salt

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