Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 748 · 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.🧺 Do we need turmeric powder for the paper helicopter? (a) needed (b) not needed
2. 2.🚁 Dropped from a raised hand, does a stone fall slowly or fast? (a) falls fast (b) falls slowly
3. 3.🧺 Which of these is needed for the paper helicopter? (a) a paper clip (b) a balloon (c) a magnet (d) turmeric powder
4. 4.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
5. 5.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) a mirror (c) vinegar (d) a balloon
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a mirror (c) food colour (d) a white flower
7. 7.🚁 Why do we clip a paper clip to the bottom of the helicopter? (a) to make it fall slower (b) to stop the spinning (c) to make it magnetic (d) to weigh down the bottom
8. 8.🛟 Why should we wipe up spilled oil at once? (a) oil attracts magnets (b) oil makes it rain (c) oil turns into honey (d) spilled oil is slippery
9. 9.⚖️ 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) the same three liquids (b) the order of pouring (c) how much of each liquid (d) the same glass
10. 10.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) lots of salt stirred in (c) more plain water (d) a little shaking
11. 11.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the oil layer (b) at the very bottom (c) on top of the oil (d) in the water layer
12. 12.🛟 What should you do with wet floors after the experiment? (a) pour more water (b) leave them wet (c) slide on them (d) wipe them dry
13. 13.True or false: a magnet is not needed for the dissolving test. (a) True (b) False
14. 14.💧 Which of these is melting? (a) a pond icing over (b) a misty bathroom mirror (c) water becoming ice (d) butter going runny
15. 15.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is kept the same. (a) True (b) False
16. 16.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed
17. 17.🧺 Do we need two chairs for the balloon rocket? (a) needed (b) not needed
18. 18.🧺 Which of these is needed for the float-or-sink test? (a) a towel for spills (b) a mirror (c) a magnet (d) a balloon
19. 19.🥄 Which of these does not dissolve in water? (a) glucose powder (b) chalk powder (c) table salt (d) food colour
20. 20.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) the cold water (c) glue on the card (d) a magnet
21. 21.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes backward (b) goes forward
22. 22.🥄 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
23. 23.🧺 Which of these is needed for the density tower? (a) a battery cell (b) a balloon (c) a tall clear glass (d) turmeric powder
24. 24.🍯 Why does honey sink to the bottom of the glass? (a) it is the densest (b) it is the stickiest (c) it is the coldest (d) it is yellow
25. 25.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is kept the same. (a) False (b) True
26. 26.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we measure it (b) we keep it the same (c) we change it
28. 28.🧺 Which of these is not needed for the dissolving test? (a) honey (b) cold water (c) a clock or timer (d) two clear glasses
29. 29.🧺 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 glass of water (d) a balloon
30. 30.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of sugar”? (a) we change it (b) we measure it (c) we keep it the same
31. 31.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) sand (c) water (d) smoke
32. 32.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we change it (b) we measure it (c) we keep it the same
33. 33.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
34. 34.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is the one thing we change. (a) True (b) False
35. 35.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) anyone, without looking (d) a grown-up
36. 36.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) yeast (d) a clear glass of water
37. 37.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a white flower (d) a balloon
38. 38.⚖️ 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 “how much of each liquid”? (a) we measure it (b) we keep it the same (c) we change it
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 measure it (c) we keep it the same
40. 40.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is kept the same. (a) False (b) True

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