Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 777 · 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: gas from the rocket goes backward. (a) False (b) True
2. 2.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is the one thing we change. (a) True (b) False
3. 3.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is kept the same. (a) True (b) False
4. 4.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) True (b) False
5. 5.🥄 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
6. 6.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) vinegar (c) a mirror (d) a long string
7. 7.🔍 Which is the odd one out? (a) an ice cube (b) a pebble (c) a coin (d) honey
8. 8.True or false: the balloon goes forward. (a) False (b) True
9. 9.💧 In the covered bowl, where does the water vapour come from? (a) the cling film (b) the bowl itself (c) water warmed by the Sun (d) the air outside
10. 10.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) turmeric powder (c) a balloon (d) a tub of water
11. 11.🧺 Which of these is not needed for the dissolving test? (a) a comb (b) sugar (c) warm water (d) cold water
12. 12.🔍 Which is the odd one out? (a) a medicine dropper (b) a bicycle pump (c) a drinking straw (d) a fridge magnet
13. 13.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
14. 14.🚁 Dropped from a raised hand, does a crumpled paper ball fall slowly or fast? (a) falls fast (b) falls slowly
15. 15.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) a sunny window (d) a battery cell
16. 16.🛟 Which scissors should children use to cut the paper? (a) gardening shears (b) sharp kitchen shears (c) a paper cutter (d) safety scissors
17. 17.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the amount of clay (b) the shape of the clay (c) whether it floats
18. 18.True or false: warm water is needed for the dissolving test. (a) False (b) True
19. 19.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) yeast (c) a magnet (d) a battery cell
20. 20.True or false: a battery cell is needed for the water cycle bowl. (a) True (b) False
21. 21.True or false: a magnet is needed for the paper helicopter. (a) True (b) False
22. 22.🧺 Which of these is needed for the card-on-a-glass trick? (a) a sink or a bucket (b) turmeric powder (c) a balloon (d) a battery cell
23. 23.True or false: a ping-pong ball floats on water. (a) True (b) False
24. 24.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is the one thing we change. (a) True (b) False
25. 25.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a glass of water (d) yeast
26. 26.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) honey (c) warm water (d) two clear glasses
27. 27.⚖️ 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 order of the layers”? (a) we keep it the same (b) we measure it (c) we change it
28. 28.True or false: an ice cube is denser than water. (a) False (b) True
29. 29.True or false: a strip of cloth lets water climb up it. (a) True (b) False
30. 30.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
31. 31.True or false: a piece of chalk lets water climb up it. (a) False (b) True
32. 32.True or false: warm water is not needed for the dissolving test. (a) True (b) False
33. 33.True or false: a paper towel does not let water climb. (a) True (b) False
34. 34.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
35. 35.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) the cap is sticky (c) air inside pushes back (d) water is hiding there
36. 36.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
37. 37.🔍 Which is the odd one out? (a) honey (b) very salty water (c) a ping-pong ball (d) a glass marble
38. 38.True or false: a ping-pong ball is less dense than water. (a) True (b) False
39. 39.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) it turns to ice (b) the water increases (c) some water evaporates (d) it turns to salt
40. 40.True or false: a balloon is not needed for the density tower. (a) True (b) False

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