Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 439 · 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 dissolves slower? (a) powdered sugar (b) sugar left unstirred (c) sugar stirred well (d) sugar in warm water
2. 2.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a magnet (c) sticky tape (d) a long string
3. 3.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) slower (b) they never dry (c) faster (d) they turn to ice
4. 4.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
5. 5.🍯 Is a cork denser or less dense than water? (a) less dense than water (b) denser than water
6. 6.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the same straw (b) distance it travels (c) how big we blow it
7. 7.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) how big we blow it (b) distance it travels (c) the same string
8. 8.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) honey (c) yeast (d) a tall clear glass
9. 9.🔍 Which is the odd one out? (a) sand (b) glucose powder (c) table salt (d) baking soda
10. 10.🍯 Which of these is less dense than water? (a) a pebble (b) a glass marble (c) cooking oil (d) a coin
11. 11.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sunny window (c) yeast (d) a clear glass of water
12. 12.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is hot (c) the straw is magnetic (d) air pushes it up
13. 13.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) powdered sugar (c) the sugar cube (d) both the same
14. 14.True or false: a pebble floats on water. (a) True (b) False
15. 15.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
16. 16.⚖️ 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 kind of flower (b) the length of the stem (c) the amount of water (d) time for colour to show
17. 17.True or false: safety scissors is not needed for the paper helicopter. (a) True (b) False
18. 18.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) a spoon (c) a balloon (d) water with food colour
19. 19.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: time to reach the floor is what we measure. (a) True (b) False
20. 20.True or false: sugar stirred well dissolves faster. (a) True (b) False
21. 21.🧺 Do we need a balloon for the dissolving test? (a) needed (b) not needed
22. 22.🛟 Which rule keeps the density tower experiment safe? (a) throw the glass (b) taste each layer (c) do not lick the spoon (d) pour it on the floor
23. 23.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a balloon (c) sugar (d) warm water
24. 24.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) colour climbs up it (d) it turns to plastic
25. 25.True or false: a comb is needed for the dissolving test. (a) False (b) True
26. 26.True or false: water is needed for the water cycle bowl. (a) False (b) True
27. 27.🛟 Which of these sinks in water? (a) a metal key (b) an ice cube (c) an ice-cream stick (d) a dry leaf
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we keep it the same (b) we measure it (c) we change it
29. 29.True or false: two clear glasses is not needed for the dissolving test. (a) True (b) False
30. 30.🧺 Do we need a mirror for the paper helicopter? (a) needed (b) not needed
31. 31.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) turmeric powder (c) a magnet (d) a results table
32. 32.🔍 Which is the odd one out? (a) a cork (b) cooking oil (c) air (d) a pebble
33. 33.⚖️ 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) the size of the bowl (b) the cling film cover (c) how many drops form (d) the time we wait
34. 34.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) the petals turn red (d) no colour change
35. 35.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a tub of water (c) turmeric powder (d) small test objects
36. 36.🥄 Which of these does not dissolve in water? (a) sawdust (b) table salt (c) glucose powder (d) baking soda
37. 37.🔍 Which is the odd one out? (a) a rubber eraser (b) a glass marble (c) a piece of foil (d) a paper towel
38. 38.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we measure it (b) we change it (c) we keep it the same
39. 39.⚖️ 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
40. 40.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) air (c) sand (d) water

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