Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 279 · 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.🛟 Does a steel spoon float or sink in water? (a) floats (b) sinks
2. 2.🧺 Which of these is needed for the dissolving test? (a) a magnet (b) two clear glasses (c) a comb (d) a balloon
3. 3.🧺 Which of these is needed for the paper helicopter? (a) a ruler (b) yeast (c) a mirror (d) turmeric powder
4. 4.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) food colour (d) turmeric powder
5. 5.🍯 Is an ice cube denser or less dense than water? (a) denser than water (b) less dense than water
6. 6.⚖️ 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 keep it the same (b) we measure it (c) we change it
7. 7.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
8. 8.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it through glass (c) stare at the Sun (d) look at it in a mirror
9. 9.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) sea water is warm (c) it has a magnet (d) steel is very light
10. 10.🧺 Which of these is not needed for the density tower? (a) water with food colour (b) a spoon (c) cooking oil (d) turmeric powder
11. 11.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) refraction (c) reflection (d) magnetism
12. 12.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) wipe up spills at once (c) play near a deep pond (d) run around the tub
13. 13.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
14. 14.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “sun or shade”? (a) we keep it the same (b) we change it (c) we measure it
15. 15.🧺 Which of these is needed for the float-or-sink test? (a) a results table (b) a magnet (c) yeast (d) a mirror
16. 16.🧺 Which of these is not needed for the water cycle bowl? (a) a big bowl (b) sunlight (c) water (d) yeast
17. 17.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
18. 18.🍯 Which of these is less dense than water? (a) a coin (b) very salty water (c) a cork (d) a pebble
19. 19.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) the paper makes colours (c) water splits the light (d) the water is coloured
20. 20.💧 Which change is this: drops under a pot lid? (a) melting (b) condensation (c) freezing (d) evaporation
21. 21.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of pouring is the one thing we change. (a) True (b) False
22. 22.True or false: a balloon is needed for the balloon rocket. (a) False (b) True
23. 23.🛟 What should you do with popped balloon pieces? (a) throw them away safely (b) keep them in your mouth (c) give them to a baby (d) chew them
24. 24.True or false: a mirror is not needed for the float-or-sink test. (a) True (b) False
25. 25.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the water layer (b) in the oil layer (c) on top of the oil (d) at the very bottom
26. 26.True or false: small pebbles does not dissolve in water. (a) True (b) False
27. 27.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a piece of foil (d) a cotton thread
28. 28.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we measure it (b) we keep it the same (c) we change it
29. 29.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) the sugar turns to salt (c) some stays undissolved (d) all of it dissolves
30. 30.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
31. 31.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) oil attracts magnets (c) spilled oil is slippery (d) oil turns into honey
32. 32.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
33. 33.🧺 Do we need sunlight for the water cycle bowl? (a) not needed (b) needed
34. 34.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to cool the glass (c) to make it rain (d) to catch any spills
35. 35.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) two clear glasses (c) cold water (d) honey
36. 36.🎈 When does the balloon rocket stop? (a) it never stops (b) when the air runs out (c) when it turns blue (d) when it gets cold
37. 37.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) a sink or a bucket (d) a stiff postcard
38. 38.True or false: small test objects is not needed for the float-or-sink test. (a) False (b) True
39. 39.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) the same tape (c) how big we blow it
40. 40.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) a magnet (c) a mirror (d) a long string

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