Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 905 · 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 falls fast through the air? (a) a toy parachute (b) a paper helicopter (c) a glass marble (d) a feather
2. 2.🌈 How many colours do we name in a rainbow (VIBGYOR)?
3. 3.True or false: a results table is needed for the float-or-sink test. (a) False (b) True
4. 4.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a big bowl (b) sunlight (c) a small cup (d) a balloon
5. 5.🧺 Which of these is needed for the water cycle bowl? (a) a mirror (b) a magnet (c) sunlight (d) turmeric powder
6. 6.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
7. 7.True or false: a rubber eraser does not let water climb. (a) True (b) False
8. 8.True or false: an iron nail floats on water. (a) False (b) True
9. 9.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same straw (b) distance it travels (c) how big we blow it (d) the slope of the string
10. 10.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a towel (d) a battery cell
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.🧺 Which of these is needed for the paper helicopter? (a) a magnet (b) yeast (c) a mirror (d) a paper clip
13. 13.🛟 Why should only a grown-up handle any hot water? (a) hot water is magnetic (b) it changes colour (c) hot water can scald (d) hot water is heavy
14. 14.True or false: honey is less dense than water. (a) False (b) True
15. 15.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) cold water (c) a comb (d) honey
16. 16.💧 Which change is this: making ice lollies? (a) condensation (b) evaporation (c) freezing (d) melting
17. 17.💧 Which of these does not let water climb? (a) a piece of chalk (b) a cotton thread (c) a rubber eraser (d) a flower stem
18. 18.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is the one thing we change. (a) True (b) False
19. 19.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) a sunny window (d) a mirror
20. 20.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is kept the same. (a) False (b) True
21. 21.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the drop height”? (a) we change it (b) we keep it the same (c) we measure it
22. 22.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
23. 23.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the kind of flower (c) the amount of colour (d) the length of the stem
25. 25.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it dissolves (c) it can float (d) it turns to stone
26. 26.🚢 Why can a heavy steel ship float on the sea? (a) sea water is warm (b) it has a magnet (c) steel is very light (d) its hollow shape
27. 27.True or false: a strip of cloth does not let water climb. (a) False (b) True
28. 28.True or false: safety scissors is needed for the paper helicopter. (a) False (b) True
29. 29.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the paper clip (b) the kind of paper (c) the drop height (d) the length of the blades
30. 30.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) play near a deep pond (c) run around the tub (d) leave water on the floor
31. 31.🍯 Is a cork denser or less dense than water? (a) denser than water (b) less dense than water
32. 32.🚁 Why do we clip a paper clip to the bottom of the helicopter? (a) to make it fall slower (b) to make it magnetic (c) to stop the spinning (d) to weigh down the bottom
33. 33.True or false: cooking oil does not dissolve in water. (a) True (b) False
34. 34.🛟 Does a metal key float or sink in water? (a) sinks (b) floats
35. 35.🔮 Predict: the string slopes uphill. What happens? (a) it travels less far (b) it speeds up (c) it travels farther (d) it goes backward first
36. 36.🧺 Which of these is needed for the density tower? (a) a tall clear glass (b) a battery cell (c) a balloon (d) a mirror
37. 37.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False
38. 38.🌦️ To see a rainbow in the sky, where must the Sun be? (a) under the ground (b) behind you (c) in front of you (d) straight above you
39. 39.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
40. 40.⚖️ 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 glass is kept the same. (a) True (b) False

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