Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 539 · 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 coloured flower experiment? (a) food colour (b) turmeric powder (c) yeast (d) a battery cell
2. 2.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) a tall clear glass (c) cooking oil (d) a balloon
3. 3.🛟 Does a dry leaf float or sink in water? (a) floats (b) sinks
4. 4.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) violet (c) yellow (d) orange
5. 5.🚀 Which of these goes backward? (a) the balloon (b) gas from the rocket (c) the rowing boat (d) the rocket
6. 6.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) on top of the oil (b) under the honey (c) in the water layer (d) in the honey layer
7. 7.🔍 Which is the odd one out? (a) a piece of foil (b) a rubber eraser (c) a strip of cloth (d) a glass marble
8. 8.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
9. 9.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
10. 10.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) how much of each liquid (b) the order of the layers (c) the same three liquids (d) the order of pouring
11. 11.True or false: a flower stem does not let water climb. (a) False (b) True
12. 12.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) oil turns into honey (c) oil attracts magnets (d) spilled oil is slippery
13. 13.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we change it (b) we measure it (c) we keep it the same
14. 14.True or false: sugar in warm water dissolves faster. (a) False (b) True
15. 15.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is the one thing we change. (a) True (b) False
16. 16.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes forward (b) goes backward
17. 17.🧺 Which of these is needed for the dissolving test? (a) sugar (b) a magnet (c) honey (d) a mirror
18. 18.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we measure it (b) we change it (c) we keep it the same
19. 19.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a paper clip (c) a mirror (d) a ruler
20. 20.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the cling film cover is the one thing we change. (a) True (b) False
21. 21.True or false: turmeric powder is needed for the float-or-sink test. (a) True (b) False
22. 22.True or false: a tall clear glass is needed for the density tower. (a) True (b) False
23. 23.🧺 Which of these is not needed for the dissolving test? (a) a magnet (b) two clear glasses (c) sugar (d) cold water
24. 24.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is kept the same. (a) True (b) False
25. 25.True or false: a misty bathroom mirror is freezing. (a) False (b) True
26. 26.⚖️ 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
27. 27.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) glue on the card (c) a magnet (d) air pushing up
28. 28.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) a strip of cloth (b) a sugar cube (c) a piece of chalk (d) a rubber eraser
30. 30.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a glass of water (c) a stiff postcard (d) a mirror
31. 31.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a paper clip (c) turmeric powder (d) a ruler
32. 32.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a mirror (c) a magnet (d) a glass of water
33. 33.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) water is hiding there (c) the bottle is magnetic (d) air inside pushes back
34. 34.True or false: a bicycle pump works by magnetism. (a) False (b) True
35. 35.True or false: water with food colour is needed for the density tower. (a) True (b) False
36. 36.🌊 What pushes a floating cork upward? (a) the cork itself (b) the air above (c) the tub (d) the water
37. 37.🥄 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
38. 38.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a small rainbow (c) a shadow of ice (d) snow falling
39. 39.🚁 Which of these falls slowly through the air? (a) a crumpled paper ball (b) an open sheet of paper (c) a glass marble (d) a coin
40. 40.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns all red (c) it turns brighter (d) it floats away

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