Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 156 · 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 — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
3. 3.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a magnet (c) a sheet of white paper (d) a sunny window
4. 4.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) yeast (c) small test objects (d) a towel for spills
5. 5.🧺 Which of these is needed for the water cycle bowl? (a) a magnet (b) a battery cell (c) sunlight (d) a mirror
6. 6.True or false: sugar stirred well dissolves faster. (a) False (b) True
7. 7.True or false: safety scissors is not needed for the paper helicopter. (a) True (b) False
8. 8.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we measure it (b) we change it (c) we keep it the same
9. 9.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) a sunny window (d) a magnet
10. 10.True or false: gas from the rocket goes backward. (a) False (b) True
11. 11.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a results table (c) a tub of water (d) a magnet
12. 12.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) colour climbs up it (d) it turns to plastic
13. 13.🔍 You drop a coin into a tub of water. What do you see? (a) it sinks (b) it bounces up (c) it dissolves (d) it floats
14. 14.🧺 Do we need a comb for the dissolving test? (a) not needed (b) needed
15. 15.🔍 Which is the odd one out? (a) a coin (b) a feather (c) a stone (d) a crumpled paper ball
16. 16.⚖️ 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) the same glass (b) the same window (c) the amount of water (d) brightness of rainbow
17. 17.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) a clear glass of water (c) a sheet of white paper (d) bright sunlight
18. 18.⚖️ 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) True (b) False
19. 19.🧺 Do we need a spoon for the density tower? (a) needed (b) not needed
20. 20.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we measure it (b) we change it (c) we keep it the same
21. 21.💧 Which change is this: dew on morning grass? (a) evaporation (b) freezing (c) condensation (d) melting
22. 22.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) under the honey (b) on top of the oil (c) in the water layer (d) in the honey layer
23. 23.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
24. 24.True or false: a big bowl is not needed for the water cycle bowl. (a) True (b) False
25. 25.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) ice cubes (c) a big bowl (d) a mirror
26. 26.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) the tub of water (c) whether it floats
27. 27.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the glass is painted (c) the water is coloured (d) the paper makes colours
28. 28.True or false: a ping-pong ball is denser than water. (a) False (b) True
29. 29.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is what we measure. (a) False (b) True
30. 30.🌧️ The drops falling back into the bowl are like which part of the real water cycle? (a) wind (b) lightning (c) rain (d) sunshine
31. 31.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
32. 32.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) on a bed (c) near a plug point (d) over a sink or bucket
33. 33.True or false: sugar in icy water dissolves faster. (a) True (b) False
34. 34.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
35. 35.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) anyone, without looking (d) a toddler
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) True (b) False
37. 37.🛟 Which of these sinks in water? (a) a cork (b) an iron nail (c) a dry leaf (d) an ice-cream stick
38. 38.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes less far (b) it turns into a kite (c) it flies off the string (d) it goes much farther
39. 39.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) turmeric powder (b) a ruler (c) a pencil (d) a paper clip
40. 40.🛟 Why should only a grown-up handle any hot water? (a) hot water is magnetic (b) it changes colour (c) hot water can scald (d) hot water is heavy

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