Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 13 · 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: two clear glasses is not needed for the dissolving test. (a) True (b) False
2. 2.💧 Which change is this: a pond icing over? (a) freezing (b) evaporation (c) melting (d) condensation
3. 3.🥛 Which of these works by magnetism? (a) a suction hook (b) a bicycle pump (c) a compass needle (d) a drinking straw
4. 4.💧 Which of these is condensation? (a) a misty bathroom mirror (b) a puddle drying up (c) snow turning to water (d) water becoming ice
5. 5.🥄 Which of these does not dissolve in water? (a) sugar (b) table salt (c) chalk powder (d) glucose powder
6. 6.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) a paper cutter (c) safety scissors (d) gardening shears
7. 7.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) fewer drops form (b) the bowl freezes (c) more drops form (d) the water turns red
8. 8.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
9. 9.💧 Which of these is freezing? (a) a puddle drying up (b) ice becoming water (c) snow turning to water (d) water becoming ice
10. 10.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
11. 11.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
12. 12.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we change it (b) we measure it (c) we keep it the same
13. 13.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) True (b) False
14. 14.🚀 Which of these goes forward? (a) water from the oars (b) water a swimmer pushes (c) the balloon (d) gas from the rocket
15. 15.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “time to reach the floor”? (a) we change it (b) we measure it (c) we keep it the same
16. 16.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
17. 17.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the kind of clay (b) the tub of water (c) the shape of the clay (d) the amount of clay
18. 18.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a magnet (b) a ruler (c) a strip of paper (d) safety scissors
19. 19.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) distance it travels (b) the same straw (c) the same string (d) how big we blow it
20. 20.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) a tall clear glass (c) cooking oil (d) a magnet
21. 21.🥄 Which of these dissolves faster? (a) a big sugar cube (b) powdered sugar (c) sugar in icy water (d) sugar left unstirred
22. 22.True or false: yeast is not needed for the water cycle bowl. (a) True (b) False
23. 23.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
24. 24.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we measure it (b) we change it (c) we keep it the same
25. 25.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a balloon (c) a glass of water (d) a sink or a bucket
26. 26.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) more friction, less far (b) less friction (c) no change at all (d) it goes faster
27. 27.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we change it (b) we measure it (c) we keep it the same
28. 28.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
29. 29.⚖️ 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 keep it the same (c) we change it
30. 30.🧺 Which of these is needed for the paper helicopter? (a) yeast (b) safety scissors (c) a battery cell (d) a balloon
31. 31.💧 Which of these is melting? (a) a puddle drying up (b) wet clothes drying (c) ice becoming water (d) drops on a cold glass
32. 32.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the kind of flower (b) the length of the stem (c) the amount of water (d) time for colour to show
33. 33.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the water turns green (c) the stem turns to ice (d) the petals turn bluish
34. 34.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
35. 35.True or false: a clock or timer is needed for the dissolving test. (a) True (b) False
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the room it stands in (b) the length of the stem (c) time for colour to show
37. 37.True or false: making ice lollies is freezing. (a) True (b) False
38. 38.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
39. 39.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
40. 40.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the time of day (b) the same window (c) the amount of water (d) brightness of rainbow

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