Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 123 · 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? What do we do with “the order of pouring”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.🥄 Which of these dissolves in water? (a) small pebbles (b) sawdust (c) food colour (d) cooking oil
3. 3.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) sugar in warm water (c) a big sugar cube (d) sugar in icy water
4. 4.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is kept the same. (a) False (b) True
5. 5.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) False (b) True
6. 6.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) a balloon (c) honey (d) cold water
7. 7.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the kind of paper (b) the person dropping (c) the paper clip (d) time to reach the floor
8. 8.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) a glass of water (d) a balloon
9. 9.True or false: a paper towel lets water climb up it. (a) False (b) True
10. 10.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
11. 11.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
12. 12.🎈 What is the job of the straw on the string? (a) it guides the balloon (b) it holds water (c) it blows air in (d) it makes it heavier
13. 13.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we keep it the same (b) we change it (c) we measure it
14. 14.🧺 Do we need turmeric powder for the density tower? (a) not needed (b) needed
15. 15.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes forward (b) goes backward
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) turmeric powder (d) food colour
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.True or false: sugar stirred well dissolves faster. (a) False (b) True
19. 19.True or false: a puddle drying up is condensation. (a) True (b) False
20. 20.🧺 Which of these is not needed for the balloon rocket? (a) yeast (b) a balloon (c) a long string (d) a drinking straw
21. 21.🌈 In VIBGYOR, what number colour is violet?
22. 22.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a suction hook (c) a compass needle (d) a magnetic chess set
23. 23.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
24. 24.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
25. 25.🧺 Which of these is needed for the density tower? (a) a mirror (b) turmeric powder (c) a battery cell (d) a tall clear glass
26. 26.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) cling film (c) water (d) a battery cell
27. 27.🔍 Which is the odd one out? (a) a steel spoon (b) a cotton thread (c) a sugar cube (d) a strip of cloth
28. 28.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) the sugar cube (c) neither of them (d) powdered sugar
29. 29.💧 Which of these lets water climb up it? (a) a steel spoon (b) a cotton thread (c) a piece of foil (d) a plastic ruler
30. 30.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we change it (b) we keep it the same (c) we measure it
31. 31.🍯 Which of these is denser than water? (a) a ping-pong ball (b) a cork (c) air (d) a coin
32. 32.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) oil makes it rain (c) spilled oil is slippery (d) oil attracts magnets
33. 33.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a magnet (c) sticky tape (d) a long string
34. 34.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the amount of water is kept the same. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) a suction hook (b) a vacuum cleaner (c) a compass needle (d) a medicine dropper
36. 36.🌈 How many colours do we name in a rainbow (VIBGYOR)?
37. 37.⚖️ 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 amount of water (b) the time of day (c) the same window (d) brightness of rainbow
38. 38.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic chess set (c) a compass needle (d) a vacuum cleaner
39. 39.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) a comb (c) warm water (d) sugar
40. 40.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: time to reach the floor is what we measure. (a) False (b) True

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