Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 898 · 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.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
2. 2.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls fast (b) falls slowly
3. 3.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) True (b) False
4. 4.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a mirror (c) bright sunlight (d) a clear glass of water
5. 5.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is the one thing we change. (a) False (b) True
6. 6.🧺 Do we need a magnet for the dissolving test? (a) not needed (b) needed
7. 7.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
8. 8.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a results table (c) small test objects (d) yeast
9. 9.🧺 Which of these is needed for the density tower? (a) a magnet (b) cooking oil (c) turmeric powder (d) a balloon
10. 10.True or false: a balloon is not needed for the float-or-sink test. (a) True (b) False
11. 11.⚖️ 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 what we measure. (a) True (b) False
12. 12.🧺 Do we need a battery cell for the balloon rocket? (a) needed (b) not needed
13. 13.🥄 Which of these dissolves in water? (a) sand (b) table salt (c) small pebbles (d) sawdust
14. 14.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
15. 15.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the petals turn red (c) the flower glows (d) no colour change
16. 16.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) yeast (c) a towel (d) a sink or a bucket
17. 17.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “how many drops form”? (a) we change it (b) we measure it (c) we keep it the same
18. 18.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is the one thing we change. (a) True (b) False
19. 19.🧺 Do we need a balloon for the density tower? (a) not needed (b) needed
20. 20.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: how many drops form is what we measure. (a) False (b) True
21. 21.True or false: a feather falls slowly through the air. (a) True (b) False
22. 22.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
23. 23.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it will not break (c) it is magnetic (d) it is heavier
24. 24.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it turns blue (c) so it does not fall (d) so it gets hot
25. 25.🚁 Why do we clip a paper clip to the bottom of the helicopter? (a) to make it magnetic (b) to stop the spinning (c) to make it fall slower (d) to weigh down the bottom
26. 26.🎈 When does the balloon rocket stop? (a) when it turns blue (b) when it gets cold (c) when the air runs out (d) it never stops
27. 27.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) food colour (c) a white flower (d) a few hours of waiting
28. 28.🔍 Which is the odd one out? (a) honey (b) a glass marble (c) cooking oil (d) very salty water
29. 29.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
30. 30.True or false: a results table is not needed for the float-or-sink test. (a) True (b) False
31. 31.🎈 What is the job of the straw on the string? (a) it holds water (b) it blows air in (c) it guides the balloon (d) it makes it heavier
32. 32.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) air inside pushes back (c) the bottle is magnetic (d) the cap is sticky
33. 33.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) turmeric powder (c) vinegar (d) a balloon
34. 34.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the time of day (b) the same white paper (c) the amount of water (d) brightness of rainbow
35. 35.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to splash everyone (c) to keep children safe (d) to hide the corks
36. 36.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the flower floats away (c) the water turns green (d) the stem turns to ice
37. 37.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) two chairs (c) a balloon (d) turmeric powder
38. 38.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) oil turns into honey (c) oil attracts magnets (d) spilled oil is slippery
39. 39.⚖️ 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 pouring is what we measure. (a) True (b) False
40. 40.True or false: a sugar cube does not let water climb. (a) True (b) False

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