Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 673 · 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 is needed for the coloured flower experiment? (a) a balloon (b) a white flower (c) a magnet (d) yeast
2. 2.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals lose water to air (c) petals like colour (d) the stem is hot
3. 3.🥄 Which of these dissolves in water? (a) sawdust (b) baking soda (c) chalk powder (d) cooking oil
4. 4.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) whether the card stays (b) how full the glass is (c) the way we turn it
5. 5.🔍 Which is the odd one out? (a) a paper towel (b) a piece of chalk (c) a piece of foil (d) a strip of cloth
6. 6.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so the Sun moves (c) so it does not fall (d) so it gets hot
7. 7.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) turmeric powder (c) a clear glass of water (d) yeast
8. 8.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we measure it (b) we change it (c) we keep it the same
9. 9.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is kept the same. (a) True (b) False
10. 10.💧 Which of these is melting? (a) a misty bathroom mirror (b) wet hair drying (c) sweat drying on skin (d) ice becoming water
11. 11.🧺 Do we need safety scissors for the paper helicopter? (a) not needed (b) needed
12. 12.True or false: a pond icing over is evaporation. (a) True (b) False
13. 13.True or false: a paper helicopter falls fast through the air. (a) True (b) False
14. 14.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a towel for spills (c) a magnet (d) a results table
15. 15.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) air inside pushes back (c) the bottle is magnetic (d) water is hiding there
16. 16.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
17. 17.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
18. 18.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we change it (b) we measure it (c) we keep it the same
19. 19.🌈 In VIBGYOR, what number colour is indigo?
20. 20.True or false: a paper helicopter falls slowly through the air. (a) False (b) True
21. 21.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) no change at all (b) more friction, less far (c) it goes faster (d) less friction
22. 22.🔍 What do you see after pouring honey, water and oil into one glass? (a) three separate layers (b) the glass gets hot (c) one mixed colour (d) bubbles of gas
23. 23.True or false: a battery cell is needed for the float-or-sink test. (a) True (b) False
24. 24.🧊 Why does an ice cube float on water? (a) ice is very cold (b) ice is magnetic (c) water is sticky (d) ice is less dense
25. 25.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) how full the glass is (b) the same glass (c) the way we turn it (d) whether the card stays
26. 26.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we measure it (b) we change it (c) we keep it the same
27. 27.True or false: a paper clip is not needed for the paper helicopter. (a) True (b) False
28. 28.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the water layer (b) on top of the oil (c) at the very bottom (d) in the oil layer
29. 29.🧺 Do we need honey for the dissolving test? (a) not needed (b) needed
30. 30.🧺 Which of these is needed for the water cycle bowl? (a) a magnet (b) a balloon (c) water (d) yeast
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 string (b) the slope of the string (c) distance it travels (d) how big we blow it
32. 32.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) True (b) False
33. 33.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
34. 34.True or false: a crumpled paper ball falls fast through the air. (a) True (b) False
35. 35.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a balloon rocket (b) a fridge magnet (c) a mirror (d) a sundial
36. 36.🧺 Which of these is not needed for the paper helicopter? (a) a balloon (b) a strip of paper (c) a pencil (d) safety scissors
37. 37.True or false: a paper clip is needed for the paper helicopter. (a) False (b) True
38. 38.🧺 Do we need a big bowl for the water cycle bowl? (a) needed (b) not needed
39. 39.🔍 Which is the odd one out? (a) wet hair drying (b) sweat drying on skin (c) a misty bathroom mirror (d) a puddle drying up
40. 40.🔍 Which is the odd one out? (a) ice becoming water (b) making ice lollies (c) butter going runny (d) snow turning to water

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