Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 178 · 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.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) oil attracts magnets (c) spilled oil is slippery (d) oil makes it rain
2. 2.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a medicine dropper (c) a suction hook (d) a vacuum cleaner
3. 3.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) True (b) False
4. 4.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a magnet (b) a paper clip (c) a ruler (d) safety scissors
5. 5.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) a balloon (c) sugar (d) two clear glasses
6. 6.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is the one thing we change. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) an ice cube (b) honey (c) a pebble (d) very salty water
8. 8.True or false: a plastic ruler does not let water climb. (a) False (b) True
9. 9.🍯 Which of these is denser than water? (a) an ice cube (b) cooking oil (c) a glass marble (d) a cork
10. 10.True or false: a rubber eraser lets water climb up it. (a) False (b) True
11. 11.True or false: a comb is needed for the dissolving test. (a) True (b) False
12. 12.🛟 How should you check if the sugar has dissolved? (a) look for leftover grains (b) taste it (c) poke it with a finger (d) smell it closely
13. 13.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) turmeric powder (b) a big bowl (c) sunlight (d) a small cup
14. 14.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
15. 15.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
16. 16.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar stirred well (c) sugar in icy water (d) sugar left unstirred
17. 17.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) distance it travels (b) the same straw (c) the slope of the string (d) the same string
18. 18.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
19. 19.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a battery cell (c) a magnet (d) bright sunlight
20. 20.🧺 Which of these is needed for the paper helicopter? (a) a paper clip (b) a mirror (c) a battery cell (d) yeast
21. 21.🥄 Does sugar stirred well dissolve faster or slower? (a) slower (b) faster
22. 22.🧺 Which of these is needed for the water cycle bowl? (a) a battery cell (b) a magnet (c) cling film (d) a balloon
23. 23.🧺 Which of these is needed for the water cycle bowl? (a) a magnet (b) a balloon (c) ice cubes (d) turmeric powder
24. 24.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) water is hiding there (c) air inside pushes back (d) the bottle is magnetic
25. 25.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
26. 26.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) time to dissolve (b) the water temperature (c) the kind of sugar (d) the amount of water
27. 27.True or false: a battery cell is needed for the float-or-sink test. (a) True (b) False
28. 28.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a balloon (c) a battery cell (d) a tub of water
29. 29.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wash your hands (d) wipe them on walls
30. 30.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it is hotter (d) it will not break
31. 31.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) red (c) orange (d) violet
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a battery cell (c) a few hours of waiting (d) a white flower
33. 33.🔍 Which is the odd one out? (a) a coin (b) an ice cube (c) a cork (d) a piece of thermocol
34. 34.🛟 Which of these floats on water? (a) a ball of clay (b) a metal key (c) a steel spoon (d) a ping-pong ball
35. 35.True or false: a big sugar cube dissolves slower. (a) False (b) True
36. 36.🧺 Which of these is not needed for the density tower? (a) yeast (b) a spoon (c) a tall clear glass (d) cooking oil
37. 37.🛟 Which is a safe rule for the balloon rocket? (a) put string round a neck (b) keep it away from faces (c) aim it at your friend (d) blow it till it bursts
38. 38.🌈 In VIBGYOR, what number colour is red?
39. 39.🔍 Which is the odd one out? (a) a piece of foil (b) a rubber eraser (c) a sugar cube (d) a plastic ruler
40. 40.🔍 Which is the odd one out? (a) a steel spoon (b) an iron nail (c) a piece of thermocol (d) a metal key

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