Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 91 · 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.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a sheet of white paper (c) a sunny window (d) a clear glass of water
2. 2.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
3. 3.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is kept the same. (a) False (b) True
4. 4.True or false: an ice-cream stick sinks in water. (a) True (b) False
5. 5.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a magnet (c) a sunny window (d) a clear glass of water
6. 6.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) how big we blow it (b) the same tape (c) the same string (d) the slope of the string
7. 7.True or false: a piece of chalk lets water climb up it. (a) True (b) False
8. 8.🧺 Which of these is not needed for the dissolving test? (a) cotton wool (b) warm water (c) sugar (d) cold water
9. 9.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we keep it the same (b) we change it (c) we measure it
10. 10.True or false: a crumpled paper ball falls fast through the air. (a) True (b) False
11. 11.🧺 Do we need cotton wool for the dissolving test? (a) needed (b) not needed
12. 12.🛟 Why should you not over-blow the balloon? (a) it can pop loudly (b) it gets too heavy (c) it turns into a kite (d) it changes colour
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a towel (c) a magnet (d) a glass of water
14. 14.🔮 Predict: you blow the balloon up only a little. What happens? (a) it turns into a kite (b) it goes much farther (c) it goes less far (d) it flies off the string
15. 15.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) the time we wait (b) how many drops form (c) the amount of water (d) the size of the bowl
16. 16.True or false: wet hair drying is condensation. (a) False (b) True
17. 17.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the same three liquids”? (a) we change it (b) we keep it the same (c) we measure it
18. 18.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
19. 19.🔍 Which is the odd one out? (a) a paper helicopter (b) a toy parachute (c) a stone (d) an open sheet of paper
20. 20.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a balloon (c) small test objects (d) a towel for spills
21. 21.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a tub of water (c) a battery cell (d) small test objects
22. 22.True or false: a suction hook works by magnetism. (a) True (b) False
23. 23.True or false: honey is needed for the density tower. (a) False (b) True
24. 24.🧺 Which of these is not needed for the water cycle bowl? (a) ice cubes (b) turmeric powder (c) cling film (d) a small cup
25. 25.🔍 Which is the odd one out? (a) a steel spoon (b) a toy parachute (c) a coin (d) a stone
26. 26.🧺 Do we need two chairs for the balloon rocket? (a) not needed (b) needed
27. 27.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the cling film cover”? (a) we measure it (b) we keep it the same (c) we change it
28. 28.True or false: yeast is not needed for the balloon rocket. (a) False (b) True
29. 29.💧 In the covered bowl, where does the water vapour come from? (a) the bowl itself (b) the cling film (c) the air outside (d) water warmed by the Sun
30. 30.🥄 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
31. 31.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) a mirror (c) a teaspoon (d) two clear glasses
32. 32.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a bicycle pump (c) a suction hook (d) a magnetic chess set
33. 33.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the paper clip”? (a) we keep it the same (b) we change it (c) we measure it
34. 34.🧺 Which of these is needed for the density tower? (a) a tall clear glass (b) a battery cell (c) a mirror (d) yeast
35. 35.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we measure it (b) we keep it the same (c) we change it
36. 36.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the amount of sugar (b) the water temperature (c) time to dissolve
37. 37.🛟 Which rule keeps the density tower experiment safe? (a) do not lick the spoon (b) throw the glass (c) taste each layer (d) pour it on the floor
38. 38.💧 Which change is this: drops on a cold glass? (a) evaporation (b) melting (c) condensation (d) freezing
39. 39.🛟 Which of these sinks in water? (a) a piece of thermocol (b) a metal key (c) a ping-pong ball (d) an ice-cream stick
40. 40.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) cooking oil (c) a tall clear glass (d) a battery cell

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