Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 249 · 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.True or false: a piece of foil does not let water climb. (a) False (b) True
2. 2.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the card stays on (c) the glass breaks (d) the water turns to ice
3. 3.🔍 Which is the odd one out? (a) a steel spoon (b) a rubber eraser (c) a paper towel (d) a piece of foil
4. 4.💧 Which change is this: wet clothes drying? (a) evaporation (b) freezing (c) melting (d) condensation
5. 5.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we measure it (b) we change it (c) we keep it the same
6. 6.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) no colour change (d) the flower glows
7. 7.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) water (c) air (d) smoke
8. 8.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is kept the same. (a) False (b) True
9. 9.🧺 Do we need a tall clear glass for the density tower? (a) not needed (b) needed
10. 10.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a towel for spills (c) a tub of water (d) turmeric powder
11. 11.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) small test objects (c) a towel for spills (d) a balloon
12. 12.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we change it (b) we measure it (c) we keep it the same
13. 13.True or false: cooking oil is needed for the density tower. (a) False (b) True
14. 14.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we change it (b) we keep it the same (c) we measure it
15. 15.🚁 Which of these falls slowly through the air? (a) a crumpled paper ball (b) a stone (c) a steel spoon (d) a feather
16. 16.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
17. 17.🧺 Do we need honey for the density tower? (a) not needed (b) needed
18. 18.🔍 Which layer is on top in the honey-water-oil tower? (a) honey (b) cooking oil (c) coloured water (d) the spoon
19. 19.True or false: a tall clear glass is not needed for the density tower. (a) False (b) True
20. 20.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) look at it through glass (d) stare at the Sun
21. 21.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is kept the same. (a) True (b) False
22. 22.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) a spoon (c) a magnet (d) cooking oil
23. 23.🔍 Which is the odd one out? (a) a strip of cloth (b) a cotton thread (c) a plastic ruler (d) a paper towel
24. 24.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) leave water on the floor (c) play near a deep pond (d) wipe up spills at once
25. 25.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it turns to stone (b) it dissolves (c) it can float (d) it sinks faster
26. 26.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a mirror (b) a balloon (c) a long string (d) a drinking straw
27. 27.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a toddler (d) a grown-up
28. 28.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is what we measure. (a) False (b) True
29. 29.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
30. 30.🛟 Does an empty capped bottle float or sink in water? (a) floats (b) sinks
31. 31.🧺 Which of these is not needed for the paper helicopter? (a) a mirror (b) safety scissors (c) a strip of paper (d) a paper clip
32. 32.⚖️ 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 measure it (b) we keep it the same (c) we change it
33. 33.🔍 Which is the odd one out? (a) a toy parachute (b) a paper helicopter (c) a stone (d) an open sheet of paper
34. 34.🫗 Why does cooking oil float on top of water? (a) oil is sticky (b) oil is hot (c) oil is heavier (d) oil is less dense
35. 35.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a mirror (c) small test objects (d) a balloon
36. 36.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) a balloon (d) a few hours of waiting
37. 37.True or false: small test objects is not needed for the float-or-sink test. (a) False (b) True
38. 38.True or false: a balloon is needed for the water rainbow. (a) False (b) True
39. 39.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the petals turn bluish (c) the flower floats away (d) the stem turns to ice
40. 40.⚖️ 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 the layers is the one thing we change. (a) True (b) False

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