Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 464 · 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.🚀 Which of these goes backward? (a) the balloon (b) air from the balloon (c) the rocket (d) the swimmer
2. 2.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is the one thing we change. (a) True (b) False
3. 3.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) the length of the blades (b) the person dropping (c) time to reach the floor
4. 4.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we change it (b) we keep it the same (c) we measure it
5. 5.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
6. 6.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is kept the same. (a) True (b) False
7. 7.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is kept the same. (a) False (b) True
8. 8.🔍 Which is the odd one out? (a) table salt (b) small pebbles (c) sugar (d) glucose powder
9. 9.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the cap is sticky (c) water is hiding there (d) the bottle is magnetic
10. 10.True or false: wet clothes drying is condensation. (a) False (b) True
11. 11.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) warm water (c) a balloon (d) two clear glasses
12. 12.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a drinking straw (d) a magnetic pin holder
13. 13.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) spilled oil is slippery (c) oil attracts magnets (d) oil makes it rain
14. 14.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) sand (c) air (d) smoke
15. 15.🧺 Do we need sunlight for the water cycle bowl? (a) not needed (b) needed
16. 16.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) a sunny window (d) turmeric powder
17. 17.🧺 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
18. 18.🔍 Which is the odd one out? (a) a stone (b) a coin (c) an open sheet of paper (d) a crumpled paper ball
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 same three liquids is the one thing we change. (a) False (b) True
20. 20.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a stiff postcard (c) a magnet (d) a glass of water
21. 21.True or false: a medicine dropper works by air pressure. (a) False (b) True
22. 22.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
23. 23.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
24. 24.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a tub of water (c) turmeric powder (d) a results table
25. 25.True or false: a small cup is needed for the water cycle bowl. (a) False (b) True
26. 26.True or false: a drinking straw works by air pressure. (a) False (b) True
27. 27.True or false: a mirror is needed for the balloon rocket. (a) True (b) False
28. 28.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
29. 29.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we keep it the same (b) we measure it (c) we change it
30. 30.🧺 Which of these is needed for the density tower? (a) a battery cell (b) a mirror (c) yeast (d) honey
31. 31.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we change it (b) we keep it the same (c) we measure it
32. 32.🔍 Which is the odd one out? (a) a suction hook (b) a magnetic pin holder (c) a compass needle (d) a fridge magnet
33. 33.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is what we measure. (a) False (b) True
34. 34.True or false: turmeric powder is needed for the density tower. (a) False (b) True
35. 35.🛟 Does a feather float or sink in water? (a) floats (b) sinks
36. 36.💧 Which of these is melting? (a) drops under a pot lid (b) butter going runny (c) dew on morning grass (d) water becoming ice
37. 37.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a clock or timer (c) sugar (d) cotton wool
38. 38.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
39. 39.🧺 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
40. 40.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) on a bed (c) near a plug point (d) over a sink or bucket

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