Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 12 · 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.⚖️ 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 the layers”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
3. 3.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is the one thing we change. (a) False (b) True
4. 4.True or false: turmeric powder is needed for the float-or-sink test. (a) True (b) False
5. 5.💧 Which change is this: snow turning to water? (a) freezing (b) evaporation (c) condensation (d) melting
6. 6.🔍 Which layer is on top in the honey-water-oil tower? (a) cooking oil (b) the spoon (c) coloured water (d) honey
7. 7.🥄 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
8. 8.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) vinegar (c) a drinking straw (d) a mirror
9. 9.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) over a laptop (c) near a plug point (d) on a bed
10. 10.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is kept the same. (a) True (b) False
11. 11.💧 Which change is this: a pond icing over? (a) melting (b) condensation (c) evaporation (d) freezing
12. 12.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we keep it the same (b) we change it (c) we measure it
13. 13.🥄 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
14. 14.True or false: a paper clip is needed for the paper helicopter. (a) False (b) True
15. 15.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a magnet (c) a towel for spills (d) a results table
16. 16.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a sundial (b) a mirror (c) a balloon rocket (d) a fridge magnet
17. 17.🧺 Do we need water with food colour for the density tower? (a) not needed (b) needed
18. 18.🧺 Do we need turmeric powder for the float-or-sink test? (a) needed (b) not needed
19. 19.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) wash your hands (d) lick your fingers
20. 20.🚁 Which of these falls fast through the air? (a) a fluff of cotton (b) a toy parachute (c) a feather (d) a coin
21. 21.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we keep it the same (b) we change it (c) we measure it
22. 22.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) safety scissors (c) turmeric powder (d) a ruler
23. 23.🔍 Which is the odd one out? (a) a bicycle pump (b) a drinking straw (c) a magnetic chess set (d) a suction hook
24. 24.🛟 How should you check if the sugar has dissolved? (a) poke it with a finger (b) smell it closely (c) look for leftover grains (d) taste it
25. 25.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the water layer (b) at the very bottom (c) in the oil layer (d) on top of the oil
26. 26.📘 What is water vapour? (a) a kind of smoke (b) water as a gas (c) salty water (d) tiny ice cubes
27. 27.True or false: the rowing boat goes forward. (a) False (b) True
28. 28.True or false: sugar stirred well dissolves slower. (a) True (b) False
29. 29.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the water temperature (b) the amount of water (c) time to dissolve
30. 30.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) a battery cell (c) a drinking straw (d) sticky tape
31. 31.⚖️ 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
32. 32.⚖️ 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 keep it the same (b) we measure it (c) we change it
33. 33.🧺 Do we need a battery cell for the density tower? (a) needed (b) not needed
34. 34.🥄 Which of these dissolves slower? (a) sugar in warm water (b) sugar in icy water (c) powdered sugar (d) sugar stirred well
35. 35.🛟 Which rule keeps the density tower experiment safe? (a) do not lick the spoon (b) taste each layer (c) pour it on the floor (d) throw the glass
36. 36.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we change it (b) we keep it the same (c) we measure it
37. 37.🌈 How many colours do we name in a rainbow (VIBGYOR)?
38. 38.⚖️ 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 what we measure. (a) True (b) False
39. 39.🛟 Why should we wipe up spilled oil at once? (a) oil attracts magnets (b) oil makes it rain (c) spilled oil is slippery (d) oil turns into honey
40. 40.True or false: sticky tape is needed for the balloon rocket. (a) True (b) False

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