Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 88 · 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.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
2. 2.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it became air (b) it sank as sand (c) it spread in the water (d) it vanished for ever
3. 3.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
4. 4.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we measure it (b) we keep it the same (c) we change it
5. 5.🥄 Which of these dissolves in water? (a) table salt (b) cooking oil (c) sawdust (d) sand
6. 6.🛟 Why should only a grown-up handle any hot water? (a) hot water can scald (b) it changes colour (c) hot water is magnetic (d) hot water is heavy
7. 7.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls slowly (b) falls fast
8. 8.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) the same glass (b) the same card (c) how full the glass is (d) whether the card stays
9. 9.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
10. 10.🚀 Which of these goes forward? (a) air from the balloon (b) gas from the rocket (c) water from the oars (d) the swimmer
11. 11.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a mirror (c) a glass of water (d) a magnet
12. 12.🧺 Do we need a tall clear glass for the density tower? (a) not needed (b) needed
13. 13.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of the layers (b) the order of pouring (c) the same three liquids
14. 14.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a balloon rocket (b) a fridge magnet (c) a sundial (d) a mirror
15. 15.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we measure it (b) we change it (c) we keep it the same
16. 16.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) the length of the blades (b) the person dropping (c) time to reach the floor
17. 17.🚀 Which of these goes forward? (a) air from the balloon (b) the balloon (c) gas from the rocket (d) water from the oars
18. 18.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
19. 19.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we measure it (b) we keep it the same (c) we change it
20. 20.🚀 Which of these goes forward? (a) air from the balloon (b) the rocket (c) gas from the rocket (d) water a swimmer pushes
21. 21.🧺 Which of these is not needed for the paper helicopter? (a) a strip of paper (b) a ruler (c) safety scissors (d) a magnet
22. 22.🛟 Does a glass marble float or sink in water? (a) sinks (b) floats
23. 23.📘 What pulls the paper helicopter down to the floor? (a) air pressure (b) magnetism (c) gravity (d) the wind
24. 24.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a towel (d) yeast
25. 25.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed
26. 26.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the paper clip”? (a) we change it (b) we measure it (c) we keep it the same
27. 27.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) water splits the light (c) the paper makes colours (d) the glass is painted
28. 28.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar in icy water (c) sugar left unstirred (d) powdered sugar
29. 29.True or false: a magnet is not needed for the water cycle bowl. (a) False (b) True
30. 30.🔍 Sand is stirred into water. What do you see after a while? (a) it turns blue (b) it dissolves (c) it settles at the bottom (d) it floats up
31. 31.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a steel spoon (c) a glass marble (d) a paper towel
32. 32.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to splash everyone (c) to hide the corks (d) to win a prize
33. 33.🥛 Which of these works by magnetism? (a) a suction hook (b) a bicycle pump (c) a vacuum cleaner (d) a magnetic chess set
34. 34.True or false: water from the oars goes backward. (a) True (b) False
35. 35.🚀 Which of these goes forward? (a) the rowing boat (b) air from the balloon (c) water a swimmer pushes (d) water from the oars
36. 36.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) wipe up spills at once (c) run around the tub (d) play near a deep pond
37. 37.🌊 What pushes a floating cork upward? (a) the tub (b) the water (c) the cork itself (d) the air above
38. 38.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) a magnet (d) a sheet of white paper
39. 39.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
40. 40.🧺 Do we need a magnet for the balloon rocket? (a) not needed (b) needed

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