Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 665 · 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: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it sinks at once (c) it turns to plastic (d) nothing ever happens
2. 2.🛟 What should you do with wet floors after the experiment? (a) pour more water (b) leave them wet (c) wipe them dry (d) slide on them
3. 3.True or false: the balloon goes forward. (a) False (b) True
4. 4.🔮 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) the bottle is magnetic (d) water is hiding there
5. 5.💧 Which change is this: wet hair drying? (a) freezing (b) evaporation (c) condensation (d) melting
6. 6.☀️ What is white sunlight really made of? (a) tiny drops of water (b) only yellow light (c) many colours mixed (d) tiny bits of dust
7. 7.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we keep it the same (b) we measure it (c) we change it
8. 8.True or false: a dry leaf floats on water. (a) True (b) False
9. 9.True or false: very salty water is less dense than water. (a) True (b) False
10. 10.🥄 Why does sugar dissolve faster in warm water? (a) cold water is wet (b) particles move faster (c) sugar likes the dark (d) warm water is thicker
11. 11.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
12. 12.🌈 How many colours do we name in a rainbow (VIBGYOR)?
13. 13.⚖️ 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
14. 14.⚖️ 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
15. 15.🌈 In VIBGYOR, what number colour is yellow?
16. 16.True or false: an empty capped bottle floats on water. (a) False (b) True
17. 17.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) safety scissors (c) a paper cutter (d) gardening shears
18. 18.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
19. 19.⚖️ 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) how many drops form (b) the cling film cover (c) sun or shade (d) the amount of water
20. 20.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a sunny window (c) a sheet of white paper (d) bright sunlight
21. 21.🌈 In VIBGYOR, what number colour is indigo?
22. 22.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we change it (b) we measure it (c) we keep it the same
23. 23.🧺 Which of these is not needed for the density tower? (a) a spoon (b) a mirror (c) cooking oil (d) water with food colour
24. 24.🍯 Why does honey sink to the bottom of the glass? (a) it is the coldest (b) it is the stickiest (c) it is the densest (d) it is yellow
25. 25.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the cling film cover”? (a) we measure it (b) we change it (c) we keep it the same
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) a towel (d) a sink or a bucket
27. 27.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
28. 28.True or false: a bicycle pump works by air pressure. (a) False (b) True
29. 29.True or false: ice cubes is not needed for the water cycle bowl. (a) False (b) True
30. 30.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is magnetic (c) it will not break (d) it is heavier
31. 31.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a medicine dropper (d) a magnetic pin holder
32. 32.🔍 Which is the odd one out? (a) a ping-pong ball (b) a dry leaf (c) a glass marble (d) an empty capped bottle
33. 33.🧺 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) a tub of water (d) a balloon
34. 34.⚖️ 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 keep it the same (b) we change it (c) we measure it
35. 35.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we change it (b) we keep it the same (c) we measure it
36. 36.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the time we wait”? (a) we measure it (b) we keep it the same (c) we change it
37. 37.🍯 Which of these is less dense than water? (a) an ice cube (b) very salty water (c) a coin (d) a glass marble
38. 38.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) wipe up spills at once (c) play near a deep pond (d) leave water on the floor
39. 39.🧺 Do we need a magnet for the dissolving test? (a) not needed (b) needed
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a battery cell (c) a glass of water (d) food colour

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