Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 530 · 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.🔮 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) at the very bottom (d) on top of the oil
2. 2.True or false: sticky tape is not needed for the balloon rocket. (a) True (b) False
3. 3.⚖️ 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 keep it the same (b) we change it (c) we measure it
4. 4.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it in a mirror (c) look at it through glass (d) never look at the Sun
5. 5.🧺 Which of these is needed for the dissolving test? (a) cotton wool (b) a balloon (c) a mirror (d) warm water
6. 6.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) turmeric powder (c) honey (d) a spoon
7. 7.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is the one thing we change. (a) True (b) False
8. 8.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) safety scissors (c) turmeric powder (d) a pencil
9. 9.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it can float (c) it turns to stone (d) it dissolves
10. 10.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is what we measure. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) a bicycle pump (b) a drinking straw (c) a vacuum cleaner (d) a compass needle
12. 12.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
13. 13.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) turmeric powder (c) a clear glass of water (d) bright sunlight
14. 14.🥄 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
15. 15.True or false: a piece of foil does not let water climb. (a) False (b) True
16. 16.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) the bottle is magnetic (c) water is hiding there (d) air inside pushes back
17. 17.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we keep it the same (b) we change it (c) we measure it
18. 18.⚖️ 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 change it (b) we measure it (c) we keep it the same
19. 19.🧺 Which of these is not needed for the paper helicopter? (a) a pencil (b) a balloon (c) a paper clip (d) safety scissors
20. 20.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the kind of sugar (b) the water temperature (c) time to dissolve (d) the amount of sugar
21. 21.🍯 Which of these is less dense than water? (a) an ice cube (b) honey (c) a coin (d) a pebble
22. 22.💧 Which of these is freezing? (a) snow turning to water (b) dew on morning grass (c) butter going runny (d) water becoming ice
23. 23.🔍 How can you get the salt back from salty water? (a) add more water (b) keep it in a fridge (c) stir it more (d) let the water evaporate
24. 24.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
25. 25.True or false: a magnetic chess set works by air pressure. (a) False (b) True
26. 26.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
27. 27.⚖️ 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
28. 28.⚖️ 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
29. 29.🧺 Do we need a strip of paper for the paper helicopter? (a) not needed (b) needed
30. 30.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) False (b) True
31. 31.🚁 Which of these falls fast through the air? (a) a paper helicopter (b) a feather (c) a stone (d) a fluff of cotton
32. 32.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) yeast (c) a tub of water (d) a results table
33. 33.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) brightness of rainbow (b) the same window (c) the same glass (d) the amount of water
34. 34.🛟 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
35. 35.🍯 Which of these is denser than water? (a) a cork (b) an ice cube (c) very salty water (d) cooking oil
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a battery cell (c) a white flower (d) a glass of water
37. 37.🛟 Why should only a grown-up handle any hot water? (a) hot water is heavy (b) hot water is magnetic (c) it changes colour (d) hot water can scald
38. 38.⚖️ 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
39. 39.True or false: a feather falls slowly through the air. (a) False (b) True
40. 40.⚖️ 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 the one thing we change. (a) False (b) True

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