Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 491 · 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 — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the order of pouring (b) the same three liquids (c) how much of each liquid (d) the same glass
2. 2.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
3. 3.🧺 Which of these is not needed for the water cycle bowl? (a) a small cup (b) a big bowl (c) water (d) yeast
4. 4.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the time we wait is what we measure. (a) False (b) True
5. 5.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
6. 6.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) a tall clear glass (c) a battery cell (d) honey
7. 7.🚁 Dropped from a raised hand, does a steel spoon fall slowly or fast? (a) falls fast (b) falls slowly
8. 8.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) it goes faster (b) no change at all (c) less friction (d) more friction, less far
9. 9.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is kept the same. (a) False (b) True
10. 10.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) oil turns into honey (c) oil attracts magnets (d) spilled oil is slippery
11. 11.⚖️ 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 length of the stem (b) the kind of flower (c) the amount of water (d) time for colour to show
12. 12.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a drinking straw (d) a magnetic chess set
13. 13.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we change it (b) we measure it (c) we keep it the same
14. 14.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a stiff postcard (c) a sink or a bucket (d) a glass of water
15. 15.🧺 Do we need a battery cell for the balloon rocket? (a) not needed (b) needed
16. 16.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a sunny window (c) a balloon (d) a battery cell
17. 17.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it sank as sand (b) it became air (c) it vanished for ever (d) it spread in the water
18. 18.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) on a bed (c) over a sink or bucket (d) near a plug point
19. 19.🥄 Does sugar stirred well dissolve faster or slower? (a) faster (b) slower
20. 20.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a magnet (b) safety scissors (c) a pencil (d) a paper clip
21. 21.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is kept the same. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of chalk (c) a sugar cube (d) a strip of cloth
23. 23.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) sharp kitchen shears (c) gardening shears (d) safety scissors
24. 24.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the petals turn bluish (c) the stem turns to ice (d) the flower floats away
25. 25.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a glass of water (c) a towel (d) turmeric powder
26. 26.🧺 Do we need a mirror for the paper helicopter? (a) needed (b) not needed
27. 27.🔍 Which is the odd one out? (a) a stone (b) a feather (c) an open sheet of paper (d) a fluff of cotton
28. 28.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
29. 29.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) a magnet (c) yeast (d) a balloon
30. 30.🧺 Do we need cooking oil for the density tower? (a) needed (b) not needed
31. 31.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so it does not fall (d) so the Sun moves
32. 32.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
33. 33.True or false: a mirror is not needed for the float-or-sink test. (a) True (b) False
34. 34.🥄 Which of these dissolves in water? (a) cooking oil (b) food colour (c) sand (d) chalk powder
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 change it (b) we keep it the same (c) we measure it
36. 36.True or false: yeast is needed for the water rainbow. (a) True (b) False
37. 37.True or false: an iron nail sinks in water. (a) False (b) True
38. 38.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
39. 39.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
40. 40.True or false: a comb is needed for the dissolving test. (a) True (b) False

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids