Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 363 · 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.🧺 Which of these is needed for the paper helicopter? (a) a mirror (b) a balloon (c) a magnet (d) a ruler
2. 2.🎈 What is the job of the straw on the string? (a) it makes it heavier (b) it blows air in (c) it guides the balloon (d) it holds water
3. 3.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the person dropping is the one thing we change. (a) False (b) True
4. 4.🌈 How many colours do we name in a rainbow (VIBGYOR)?
5. 5.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes forward (b) goes backward
6. 6.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) two chairs (c) a battery cell (d) a drinking straw
7. 7.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) the youngest child (c) nobody needs to (d) a friend who is running
8. 8.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns brighter (c) it turns all red (d) the rainbow fades
9. 9.True or false: yeast is not needed for the paper helicopter. (a) False (b) True
10. 10.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the water temperature (b) the stirring (c) the amount of sugar (d) the kind of sugar
11. 11.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) it turns to plastic (d) nothing ever happens
12. 12.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) True (b) False
13. 13.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a magnet (c) a ruler (d) safety scissors
14. 14.🧺 Do we need a balloon for the density tower? (a) needed (b) not needed
15. 15.🧺 Which of these is needed for the paper helicopter? (a) a pencil (b) a mirror (c) a magnet (d) a battery cell
16. 16.True or false: sunlight is not needed for the water cycle bowl. (a) True (b) False
17. 17.⚖️ 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 keep it the same (b) we measure it (c) we change it
18. 18.🧺 Which of these is needed for the float-or-sink test? (a) small test objects (b) a balloon (c) a magnet (d) turmeric powder
19. 19.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a bicycle pump (d) a magnetic chess set
20. 20.🚀 In “push back, move forward”, which way does the rocket go? (a) goes forward (b) goes backward
21. 21.True or false: a sugar cube lets water climb up it. (a) False (b) True
22. 22.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) small test objects (c) a towel for spills (d) a magnet
23. 23.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is kept the same. (a) False (b) True
24. 24.True or false: the rowing boat goes backward. (a) False (b) True
25. 25.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) a mirror (c) safety scissors (d) a strip of paper
26. 26.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a magnet (c) a shadow of ice (d) snow falling
27. 27.🛟 Why should we wipe up spilled oil at once? (a) oil attracts magnets (b) oil turns into honey (c) spilled oil is slippery (d) oil makes it rain
28. 28.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is the one thing we change. (a) False (b) True
29. 29.True or false: a dry leaf sinks in water. (a) True (b) False
30. 30.True or false: a battery cell is needed for the density tower. (a) True (b) False
31. 31.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) pour it on the floor (c) do not lick the spoon (d) throw the glass
32. 32.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a stiff postcard (d) turmeric powder
33. 33.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) cooking oil (c) a battery cell (d) a tall clear glass
34. 34.True or false: a battery cell is needed for the float-or-sink test. (a) False (b) True
35. 35.True or false: honey is denser than water. (a) False (b) True
36. 36.⚖️ 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 change it (c) we measure it
37. 37.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a drinking straw (c) a balloon (d) a magnet
38. 38.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) lick your fingers (d) wipe them on walls
39. 39.🎈 Why does the balloon rocket move along the string? (a) a magnet pulls it (b) the string pulls it (c) escaping air pushes it (d) the straw is heavy
40. 40.🧺 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) yeast (d) a tub of water

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