Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 588 · 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.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
2. 2.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
3. 3.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) a big bowl (c) sunlight (d) a magnet
4. 4.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is what we measure. (a) True (b) False
5. 5.🧺 Do we need safety scissors for the paper helicopter? (a) not needed (b) needed
6. 6.🔍 Which is the odd one out? (a) a glass marble (b) a coin (c) a steel spoon (d) a fluff of cotton
7. 7.🚀 Which of these goes backward? (a) the balloon (b) the rocket (c) the rowing boat (d) water a swimmer pushes
8. 8.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) turmeric powder (d) a sink or a bucket
9. 9.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
10. 10.💧 In the covered bowl, where does the water vapour come from? (a) water warmed by the Sun (b) the cling film (c) the bowl itself (d) the air outside
11. 11.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) yeast (c) a stiff postcard (d) a glass of water
12. 12.🧺 Which of these is needed for the density tower? (a) turmeric powder (b) yeast (c) water with food colour (d) a battery cell
13. 13.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
14. 14.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) some water evaporates (b) it turns to salt (c) it turns to ice (d) the water increases
15. 15.🔍 Which is the odd one out? (a) a suction hook (b) a drinking straw (c) a magnetic chess set (d) a vacuum cleaner
16. 16.⚖️ 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 measure it (b) we change it (c) we keep it the same
17. 17.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they fall off at once (c) they all turn green (d) they stay white
18. 18.🛟 Does a pebble float or sink in water? (a) floats (b) sinks
19. 19.True or false: a glass marble sinks in water. (a) True (b) False
20. 20.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a battery cell (c) a sink or a bucket (d) a glass of water
21. 21.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a balloon (c) a pencil (d) a paper clip
22. 22.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a glass of water (d) a magnet
23. 23.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) turmeric powder (c) a stiff postcard (d) a towel
24. 24.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a mirror (c) a clear glass of water (d) bright sunlight
25. 25.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the shape of the clay (b) whether it floats (c) the tub of water (d) the amount of clay
26. 26.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) no colour change (c) the stem turns blue (d) the petals turn red
27. 27.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a towel (c) a balloon (d) a mirror
28. 28.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is the one thing we change. (a) True (b) False
29. 29.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “time to reach the floor”? (a) we keep it the same (b) we change it (c) we measure it
30. 30.🧺 Do we need a small cup for the water cycle bowl? (a) needed (b) not needed
31. 31.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a balloon (c) a magnet (d) a long string
32. 32.🚁 Which of these falls fast through the air? (a) an open sheet of paper (b) a paper helicopter (c) a steel spoon (d) a toy parachute
33. 33.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a big bowl (b) water (c) a small cup (d) a mirror
34. 34.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it floats away (c) the rainbow fades (d) it turns brighter
35. 35.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we change it (b) we keep it the same (c) we measure it
36. 36.🔍 Which is the odd one out? (a) a pebble (b) honey (c) a coin (d) a cork
37. 37.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is what we measure. (a) True (b) False
38. 38.🔍 How can you get the salt back from salty water? (a) add more water (b) stir it more (c) let the water evaporate (d) keep it in a fridge
39. 39.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) turmeric powder (c) yeast (d) a clear glass of water
40. 40.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) fewer drops form (b) more drops form (c) the water turns red (d) the bowl freezes

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