Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 610 · 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.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the oil layer (b) on top of the oil (c) in the water layer (d) at the very bottom
2. 2.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) safety scissors (c) a battery cell (d) a ruler
3. 3.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) the way we turn it (b) whether the card stays (c) the same glass (d) the same card
4. 4.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
5. 5.True or false: turmeric powder is needed for the density tower. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) a glass marble (b) a piece of chalk (c) a cotton thread (d) a flower stem
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a few hours of waiting (c) a glass of water (d) a white flower
8. 8.⚖️ 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 order of pouring”? (a) we change it (b) we keep it the same (c) we measure it
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a balloon (d) a few hours of waiting
10. 10.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same three liquids is kept the same. (a) True (b) False
11. 11.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) ice cubes (b) a balloon (c) sunlight (d) a small cup
12. 12.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) wind (b) sunshine (c) lightning (d) rain
13. 13.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) spilled oil is slippery (c) oil attracts magnets (d) oil makes it rain
14. 14.🥚 A fresh egg sinks in plain water. What makes it float? (a) a little shaking (b) a few ice cubes (c) lots of salt stirred in (d) more plain water
15. 15.🔍 Which is the odd one out? (a) a coin (b) a glass marble (c) a paper helicopter (d) a steel spoon
16. 16.💧 Which of these lets water climb up it? (a) a glass marble (b) a paper towel (c) a piece of foil (d) a rubber eraser
17. 17.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the amount of water (b) brightness of rainbow (c) the same window (d) the same glass
18. 18.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the petals turn bluish (d) the water turns green
19. 19.🔮 Predict: you add two more paper clips. How does it fall? (a) it floats up (b) it stops in the air (c) slower (d) faster
20. 20.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they fall off at once (c) they all turn green (d) they turn two colours
21. 21.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar stirred well (c) sugar in icy water (d) sugar in warm water
22. 22.🧺 Do we need a mirror for the water cycle bowl? (a) needed (b) not needed
23. 23.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a clear glass of water (c) turmeric powder (d) a sunny window
24. 24.True or false: a magnet is needed for the water cycle bowl. (a) False (b) True
25. 25.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we measure it (b) we change it (c) we keep it the same
26. 26.🛟 What should you do with wet floors after the experiment? (a) pour more water (b) slide on them (c) wipe them dry (d) leave them wet
27. 27.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the stirring (b) the kind of sugar (c) the amount of sugar (d) time to dissolve
28. 28.🚁 What does the paper helicopter do as it falls? (a) it stays still in air (b) it spins round (c) it flies upward (d) it turns into a ball
29. 29.True or false: a comb is needed for the dissolving test. (a) False (b) True
30. 30.💧 Which of these does not let water climb? (a) a strip of cloth (b) a glass marble (c) a piece of chalk (d) a sugar cube
31. 31.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
32. 32.🔍 Which is the odd one out? (a) a fluff of cotton (b) a crumpled paper ball (c) a feather (d) a paper helicopter
33. 33.🧺 Do we need a battery cell for the water cycle bowl? (a) not needed (b) needed
34. 34.True or false: cooking oil is denser than water. (a) False (b) True
35. 35.🔍 Which is the odd one out? (a) an ice cube (b) cooking oil (c) air (d) a coin
36. 36.🧺 Which of these is needed for the water cycle bowl? (a) ice cubes (b) a mirror (c) turmeric powder (d) a magnet
37. 37.🥄 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
38. 38.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: time to reach the floor is what we measure. (a) True (b) False
39. 39.💧 What happens to water vapour when it touches the cold cling film? (a) it disappears (b) it turns to smoke (c) it turns to salt (d) it turns to drops
40. 40.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they mix for ever (b) they separate again (c) they become solid (d) they turn to honey

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