Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 429 · 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: a tall clear glass is needed for the density tower. (a) False (b) True
2. 2.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a mirror (b) a balloon (c) two chairs (d) a long string
3. 3.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
4. 4.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) two chairs (c) a balloon (d) yeast
5. 5.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a magnet (d) a white flower
7. 7.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) balloons (c) prisms (d) magnets
8. 8.🛟 Why should we wipe up spilled oil at once? (a) spilled oil is slippery (b) oil attracts magnets (c) oil makes it rain (d) oil turns into honey
9. 9.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is what we measure. (a) True (b) False
10. 10.🛟 Where is a safe place to drop the helicopter from? (a) a high window ledge (b) a wobbly chair (c) from your raised hand (d) a roof edge
11. 11.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) air pressure (c) magnetism (d) friction
12. 12.🍯 Is cooking oil denser or less dense than water? (a) less dense than water (b) denser than water
13. 13.🧺 Which of these is not needed for the water cycle bowl? (a) water (b) a magnet (c) sunlight (d) cling film
14. 14.🔍 Which is the odd one out? (a) making ice lollies (b) a misty bathroom mirror (c) drops on a cold glass (d) dew on morning grass
15. 15.⚖️ 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) True (b) False
16. 16.True or false: a balloon is not needed for the water cycle bowl. (a) True (b) False
17. 17.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the same glass”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it vanished for ever (b) it spread in the water (c) it sank as sand (d) it became air
19. 19.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
20. 20.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we measure it (b) we keep it the same (c) we change it
21. 21.True or false: a mirror is needed for the balloon rocket. (a) True (b) False
22. 22.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) a strip of cloth (b) a plastic ruler (c) a rubber eraser (d) a piece of foil
24. 24.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a mirror (c) yeast (d) a glass of water
25. 25.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) a balloon (d) a sunny window
26. 26.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) safety scissors (c) gardening shears (d) a paper cutter
27. 27.🔍 Which is the odd one out? (a) making ice lollies (b) a misty bathroom mirror (c) a pond icing over (d) water becoming ice
28. 28.🫗 Why does cooking oil float on top of water? (a) oil is sticky (b) oil is less dense (c) oil is heavier (d) oil is hot
29. 29.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the stem turns blue (c) the petals turn red (d) the flower glows
30. 30.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a magnet (c) a results table (d) a towel for spills
31. 31.True or false: a pond icing over is freezing. (a) False (b) True
32. 32.True or false: wet clothes drying is melting. (a) False (b) True
33. 33.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) a battery cell (d) food colour
34. 34.🌈 How many colours do we name in a rainbow (VIBGYOR)?
35. 35.🎈 Why does the balloon rocket move along the string? (a) escaping air pushes it (b) the straw is heavy (c) the string pulls it (d) a magnet pulls it
36. 36.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
37. 37.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) yeast (c) a ruler (d) a strip of paper
38. 38.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a few hours of waiting (c) a magnet (d) a battery cell
39. 39.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we change it (b) we keep it the same (c) we measure it
40. 40.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) yeast (c) water with food colour (d) a spoon

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