Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 449 · 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.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls slowly (b) falls fast
2. 2.🫗 Why does cooking oil float on top of water? (a) oil is heavier (b) oil is less dense (c) oil is sticky (d) oil is hot
3. 3.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the water turns green (c) the stem turns to ice (d) the petals turn bluish
4. 4.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) a grown-up (d) anyone, without looking
5. 5.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same straw (b) how big we blow it (c) distance it travels (d) the slope of the string
6. 6.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is kept the same. (a) True (b) False
7. 7.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) fewer drops form (b) the water turns red (c) more drops form (d) the bowl freezes
8. 8.🧺 Do we need a strip of paper for the paper helicopter? (a) needed (b) not needed
9. 9.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) a mirror (c) a battery cell (d) a long string
10. 10.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is what we measure. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) snow turning to water (b) a pond icing over (c) butter going runny (d) ice becoming water
12. 12.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) small test objects (c) a mirror (d) yeast
13. 13.True or false: a steel spoon falls fast through the air. (a) False (b) True
14. 14.🚁 Which of these falls fast through the air? (a) a feather (b) a paper helicopter (c) a fluff of cotton (d) a glass marble
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) food colour (d) a white flower
16. 16.🥄 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
17. 17.🧺 Which of these is not needed for the water cycle bowl? (a) water (b) sunlight (c) a magnet (d) a big bowl
18. 18.💧 Which change is this: drops under a pot lid? (a) evaporation (b) melting (c) freezing (d) condensation
19. 19.💧 Which of these lets water climb up it? (a) a piece of foil (b) a plastic ruler (c) a steel spoon (d) a paper towel
20. 20.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is the one thing we change. (a) True (b) False
21. 21.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) on top of the oil (b) at the very bottom (c) in the water layer (d) in the oil layer
22. 22.🔍 Which is the odd one out? (a) a glass marble (b) a crumpled paper ball (c) an open sheet of paper (d) a stone
23. 23.💧 Which change is this: ice becoming water? (a) melting (b) evaporation (c) freezing (d) condensation
24. 24.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) turmeric powder (d) a towel
25. 25.🧺 Do we need a small cup for the water cycle bowl? (a) not needed (b) needed
26. 26.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) a drinking straw (c) turmeric powder (d) vinegar
27. 27.🥛 Which of these works by magnetism? (a) a drinking straw (b) a fridge magnet (c) a medicine dropper (d) a bicycle pump
28. 28.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we measure it (b) we change it (c) we keep it the same
29. 29.⚖️ 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) True (b) False
30. 30.True or false: water from the oars goes forward. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) air (b) cooking oil (c) a cork (d) a glass marble
32. 32.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
33. 33.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a compass needle (d) a drinking straw
34. 34.🚁 Dropped from a raised hand, does a crumpled paper ball fall slowly or fast? (a) falls slowly (b) falls fast
35. 35.💧 In the covered bowl, where does the water vapour come from? (a) the cling film (b) the air outside (c) water warmed by the Sun (d) the bowl itself
36. 36.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) poke it with a finger (c) taste it (d) look for leftover grains
37. 37.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
38. 38.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a battery cell (c) a sunny window (d) turmeric powder
39. 39.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) the time we wait (b) the cling film cover (c) how many drops form (d) sun or shade
40. 40.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a balloon (b) a tub of water (c) a towel for spills (d) small test objects

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