Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 148 · 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: an ice-cream stick sinks in water. (a) True (b) False
2. 2.True or false: a long string is needed for the balloon rocket. (a) True (b) False
3. 3.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) False (b) True
4. 4.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
5. 5.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) it stays still (b) forward (c) straight down (d) backward
6. 6.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) water is hiding there (c) the cap is sticky (d) the bottle is magnetic
7. 7.True or false: powdered sugar dissolves faster. (a) True (b) False
8. 8.🛟 How should you check if the sugar has dissolved? (a) taste it (b) smell it closely (c) look for leftover grains (d) poke it with a finger
9. 9.True or false: a cork sinks in water. (a) True (b) False
10. 10.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
11. 11.🛟 Which scissors should children use to cut the paper? (a) gardening shears (b) sharp kitchen shears (c) a paper cutter (d) safety scissors
12. 12.🔮 Predict: you fold the two blades the other way. What changes? (a) it spins the other way (b) it turns blue (c) it falls upward (d) it does not fall
13. 13.🧺 Which of these is needed for the water cycle bowl? (a) turmeric powder (b) a magnet (c) ice cubes (d) a battery cell
14. 14.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
15. 15.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a towel (d) a magnet
16. 16.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we measure it (b) we change it (c) we keep it the same
17. 17.🛟 What should you do with wet floors after the experiment? (a) slide on them (b) wipe them dry (c) leave them wet (d) pour more water
18. 18.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) a mirror (c) a magnet (d) yeast
19. 19.🔍 Which is the odd one out? (a) an ice cube (b) a glass marble (c) a dry leaf (d) a feather
20. 20.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we change it (b) we keep it the same (c) we measure it
21. 21.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) look at it in a mirror (c) stare at the Sun (d) never look at the Sun
22. 22.True or false: an empty capped bottle sinks in water. (a) False (b) True
23. 23.True or false: a mirror is needed for the water cycle bowl. (a) False (b) True
24. 24.True or false: a suction hook works by air pressure. (a) False (b) True
25. 25.🎈 Why does the balloon rocket move along the string? (a) a magnet pulls it (b) the string pulls it (c) the straw is heavy (d) escaping air pushes it
26. 26.🥄 Which of these dissolves in water? (a) sawdust (b) baking soda (c) chalk powder (d) cooking oil
27. 27.🌈 In VIBGYOR, what number colour is yellow?
28. 28.💧 Which of these lets water climb up it? (a) a piece of chalk (b) a steel spoon (c) a plastic ruler (d) a glass marble
29. 29.🥛 Which of these works by magnetism? (a) a drinking straw (b) a vacuum cleaner (c) a bicycle pump (d) a fridge magnet
30. 30.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) red (c) yellow (d) violet
31. 31.🌊 What pushes a floating cork upward? (a) the water (b) the tub (c) the cork itself (d) the air above
32. 32.True or false: an ice cube sinks in water. (a) False (b) True
33. 33.True or false: turmeric powder is not needed for the float-or-sink test. (a) False (b) True
34. 34.🛟 Does a dry leaf float or sink in water? (a) floats (b) sinks
35. 35.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
36. 36.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) safety scissors (c) a pencil (d) a battery cell
37. 37.🛟 Why should we wipe up spilled oil at once? (a) spilled oil is slippery (b) oil turns into honey (c) oil makes it rain (d) oil attracts magnets
38. 38.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) how much of each liquid (b) the order of the layers (c) the same glass (d) the same three liquids
39. 39.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward
40. 40.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed

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