Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 202 · 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.🛟 Why should only a grown-up handle any hot water? (a) hot water can scald (b) hot water is magnetic (c) hot water is heavy (d) it changes colour
2. 2.True or false: vinegar is not needed for the balloon rocket. (a) False (b) True
3. 3.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) time to dissolve (b) the amount of sugar (c) the water temperature
4. 4.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
5. 5.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed
6. 6.🌈 In VIBGYOR, what number colour is blue?
7. 7.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “time to reach the floor”? (a) we measure it (b) we change it (c) we keep it the same
8. 8.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
9. 9.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the time we wait”? (a) we change it (b) we keep it the same (c) we measure it
10. 10.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a balloon (c) a tub of water (d) small test objects
11. 11.True or false: a sugar cube does not let water climb. (a) False (b) True
12. 12.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to hide the corks (c) to keep children safe (d) to win a prize
13. 13.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
14. 14.💧 Which of these lets water climb up it? (a) a steel spoon (b) a strip of cloth (c) a piece of foil (d) a glass marble
15. 15.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we measure it (b) we keep it the same (c) we change it
16. 16.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
17. 17.True or false: powdered sugar dissolves faster. (a) False (b) True
18. 18.🛟 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
19. 19.True or false: a results table is not needed for the float-or-sink test. (a) False (b) True
20. 20.💧 In the covered bowl, where does the water vapour come from? (a) the air outside (b) the cling film (c) the bowl itself (d) water warmed by the Sun
21. 21.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is kept the same. (a) True (b) False
22. 22.🧺 Do we need a mirror for the dissolving test? (a) needed (b) not needed
23. 23.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) a tall clear glass (c) water with food colour (d) a magnet
24. 24.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) a balloon (c) yeast (d) a battery cell
25. 25.🛟 What should you do with popped balloon pieces? (a) chew them (b) give them to a baby (c) keep them in your mouth (d) throw them away safely
26. 26.True or false: a magnet is needed for the density tower. (a) False (b) True
27. 27.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we measure it (b) we change it (c) we keep it the same
28. 28.True or false: turmeric powder is not needed for the paper helicopter. (a) True (b) False
29. 29.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) refraction (c) magnetism (d) reflection
30. 30.🔍 Which is the odd one out? (a) baking soda (b) glucose powder (c) sand (d) table salt
31. 31.🍯 Which of these is less dense than water? (a) a glass marble (b) a coin (c) air (d) honey
32. 32.True or false: drops under a pot lid is freezing. (a) True (b) False
33. 33.True or false: turmeric powder is needed for the float-or-sink test. (a) True (b) False
34. 34.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the amount of colour (b) the amount of water (c) the room it stands in (d) the length of the stem
35. 35.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the same glass (b) how much of each liquid (c) the order of the layers (d) the same three liquids
36. 36.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
37. 37.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) a magnet (c) air pushing up (d) glue on the card
38. 38.🧺 Which of these is needed for the dissolving test? (a) a comb (b) warm water (c) a balloon (d) a magnet
39. 39.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the size of the bowl”? (a) we measure it (b) we change it (c) we keep it the same
40. 40.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster

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