Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 487 · 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 — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “how much of each liquid”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🔍 Which is the odd one out? (a) a dry leaf (b) a metal key (c) a ball of clay (d) a glass marble
3. 3.🍯 Is cooking oil denser or less dense than water? (a) less dense than water (b) denser than water
4. 4.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same tape (b) how big we blow it (c) distance it travels (d) the slope of the string
5. 5.True or false: a battery cell is needed for the density tower. (a) False (b) True
6. 6.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to splash everyone (c) to hide the corks (d) to win a prize
7. 7.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the glass breaks (c) the card stays on (d) the card flies away
8. 8.True or false: a towel for spills is not needed for the float-or-sink test. (a) False (b) True
9. 9.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a mirror (d) a clear glass of water
10. 10.⚖️ 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
11. 11.🧺 Which of these is not needed for the density tower? (a) cooking oil (b) a balloon (c) water with food colour (d) a tall clear glass
12. 12.🛟 Does a ball of clay float or sink in water? (a) sinks (b) floats
13. 13.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a ruler (c) a pencil (d) a battery cell
14. 14.🧺 Which of these is needed for the water rainbow? (a) a sunny window (b) a mirror (c) yeast (d) a magnet
15. 15.True or false: ice cubes is needed for the water cycle bowl. (a) False (b) True
16. 16.True or false: cling film is not needed for the water cycle bowl. (a) False (b) True
17. 17.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
18. 18.🫗 Why does cooking oil float on top of water? (a) oil is hot (b) oil is less dense (c) oil is sticky (d) oil is heavier
19. 19.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is what we measure. (a) False (b) True
20. 20.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a results table (c) yeast (d) a towel for spills
21. 21.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) how much of each liquid (b) the same three liquids (c) the order of pouring (d) the order of the layers
22. 22.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) distance it travels (b) how big we blow it (c) the same tape (d) the same straw
23. 23.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it floats higher (c) it turns blue (d) it sinks
24. 24.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) run around the tub (c) play near a deep pond (d) wipe up spills at once
25. 25.🧺 Do we need a magnet for the density tower? (a) not needed (b) needed
26. 26.🧺 Which of these is needed for the density tower? (a) a balloon (b) a magnet (c) a mirror (d) a tall clear glass
27. 27.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we keep it the same (b) we change it (c) we measure it
28. 28.True or false: a tall clear glass is not needed for the density tower. (a) True (b) False
29. 29.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) how much of each liquid (b) the same three liquids (c) the order of pouring (d) the order of the layers
30. 30.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the tub of water (b) whether it floats (c) the amount of clay (d) the kind of clay
31. 31.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “sun or shade”? (a) we keep it the same (b) we change it (c) we measure it
32. 32.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) a magnet (c) turmeric powder (d) a balloon
33. 33.💧 Which of these does not let water climb? (a) a paper towel (b) a sugar cube (c) a plastic ruler (d) a strip of cloth
34. 34.🚀 Which of these goes backward? (a) the swimmer (b) the rowing boat (c) the rocket (d) gas from the rocket
35. 35.🧺 Which of these is needed for the paper helicopter? (a) yeast (b) a battery cell (c) turmeric powder (d) a ruler
36. 36.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we measure it (b) we keep it the same (c) we change it
37. 37.🧺 Which of these is not needed for the balloon rocket? (a) sticky tape (b) a long string (c) a drinking straw (d) turmeric powder
38. 38.🧺 Which of these is needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a battery cell (c) a balloon (d) a magnet
39. 39.🧺 Do we need yeast for the balloon rocket? (a) not needed (b) needed
40. 40.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the same window (b) brightness of rainbow (c) the amount of water

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