Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 89 · 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.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) a sunny window (d) a mirror
2. 2.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) water (c) smoke (d) air
3. 3.🛟 Which rule keeps the density tower experiment safe? (a) throw the glass (b) do not lick the spoon (c) taste each layer (d) pour it on the floor
4. 4.True or false: safety scissors is not needed for the paper helicopter. (a) True (b) False
5. 5.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a magnet (c) turmeric powder (d) a glass of water
6. 6.🍯 Which of these is less dense than water? (a) a glass marble (b) honey (c) a coin (d) an ice cube
7. 7.🛟 What should you do after handling food colour? (a) wash your hands (b) lick your fingers (c) wipe them on walls (d) rub your eyes
8. 8.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) a mirror (c) a magnet (d) a balloon
9. 9.True or false: a mirror is not needed for the paper helicopter. (a) True (b) False
10. 10.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a white flower (d) a battery cell
11. 11.True or false: yeast is needed for the paper helicopter. (a) False (b) True
12. 12.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a magnet (c) small test objects (d) a results table
13. 13.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it goes backward first (c) it speeds up (d) it travels less far
14. 14.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the size of the bowl”? (a) we measure it (b) we change it (c) we keep it the same
15. 15.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) water splits the light (c) the glass is painted (d) the water is coloured
16. 16.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) wipe up spills at once (c) play near a deep pond (d) run around the tub
17. 17.🛟 Does an ice cube float or sink in water? (a) sinks (b) floats
18. 18.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a vacuum cleaner (c) a fridge magnet (d) a drinking straw
19. 19.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) the amount of water (b) how many drops form (c) sun or shade (d) the size of the bowl
20. 20.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
21. 21.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the room it stands in (b) the amount of water (c) the kind of flower (d) the length of the stem
22. 22.True or false: sweat drying on skin is melting. (a) True (b) False
23. 23.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
24. 24.True or false: a magnet is needed for the float-or-sink test. (a) True (b) False
25. 25.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) sticky tape (c) vinegar (d) a drinking straw
26. 26.🧺 Which of these is needed for the paper helicopter? (a) a balloon (b) yeast (c) a ruler (d) a battery cell
27. 27.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) a magnet (c) a long string (d) a battery cell
28. 28.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we change it (b) we keep it the same (c) we measure it
29. 29.🛟 Which of these sinks in water? (a) a cork (b) a coin (c) a feather (d) a dry leaf
30. 30.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) no change at all (b) it goes faster (c) more friction, less far (d) less friction
31. 31.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
32. 32.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
33. 33.🌈 In VIBGYOR, what number colour is green?
34. 34.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is the one thing we change. (a) True (b) False
35. 35.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a clear glass of water (d) a battery cell
36. 36.True or false: a battery cell is not needed for the paper helicopter. (a) False (b) True
37. 37.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a mirror (c) a towel for spills (d) small test objects
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we change it (b) we keep it the same (c) we measure it
39. 39.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is kept the same. (a) True (b) False
40. 40.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it turns to stone (b) it sinks faster (c) it dissolves (d) it can float

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