Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 292 · 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 cycle bowl. Which one is NOT needed? (a) a big bowl (b) water (c) ice cubes (d) a balloon
2. 2.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) sticky tape (c) a magnet (d) a drinking straw
3. 3.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the same white paper (b) brightness of rainbow (c) the amount of water (d) the time of day
4. 4.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals are magnetic (c) petals lose water to air (d) the stem is hot
5. 5.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) a grown-up (c) nobody needs to (d) the youngest child
6. 6.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) no colour change (c) the flower glows (d) the petals turn red
7. 7.🚁 Why does the paper helicopter fall slowly? (a) a magnet holds it (b) air pushes on its blades (c) it has no weight (d) the floor pushes it
8. 8.True or false: sugar dissolves in water. (a) False (b) True
9. 9.True or false: a magnet is needed for the float-or-sink test. (a) False (b) True
10. 10.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) a pebble (b) a coin (c) very salty water (d) air
12. 12.🧺 Do we need yeast for the balloon rocket? (a) needed (b) not needed
13. 13.🚁 Which of these falls fast through the air? (a) a feather (b) a crumpled paper ball (c) a fluff of cotton (d) a toy parachute
14. 14.🧺 Do we need a tall clear glass for the density tower? (a) not needed (b) needed
15. 15.True or false: sugar is not needed for the dissolving test. (a) True (b) False
16. 16.🧺 Which of these is needed for the density tower? (a) turmeric powder (b) a mirror (c) a magnet (d) cooking oil
17. 17.🌈 In VIBGYOR, what number colour is green?
18. 18.True or false: sand dissolves in water. (a) True (b) False
19. 19.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
20. 20.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) over a sink or bucket (d) near a plug point
21. 21.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a long string (c) yeast (d) a drinking straw
22. 22.🔮 Predict: you add two more paper clips. How does it fall? (a) faster (b) slower (c) it floats up (d) it stops in the air
23. 23.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed
24. 24.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) air pushes it up (c) the straw is hot (d) juice likes plastic
25. 25.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
26. 26.🚁 Dropped from a raised hand, does a coin fall slowly or fast? (a) falls slowly (b) falls fast
27. 27.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) warm water (c) a balloon (d) two clear glasses
28. 28.🧺 Which of these is needed for the density tower? (a) yeast (b) turmeric powder (c) a spoon (d) a mirror
29. 29.🥄 Which of these dissolves faster? (a) sugar left unstirred (b) sugar stirred well (c) a big sugar cube (d) sugar in icy water
30. 30.True or false: sugar in warm water dissolves slower. (a) True (b) False
31. 31.🧺 Do we need a long string for the balloon rocket? (a) needed (b) not needed
32. 32.🔮 Predict: you fold the two blades the other way. What changes? (a) it turns blue (b) it does not fall (c) it falls upward (d) it spins the other way
33. 33.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is what we measure. (a) False (b) True
34. 34.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a magnet (c) a results table (d) a balloon
35. 35.🎈 Why does the balloon rocket move along the string? (a) the string pulls it (b) a magnet pulls it (c) escaping air pushes it (d) the straw is heavy
36. 36.True or false: chalk powder dissolves in water. (a) False (b) True
37. 37.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
38. 38.True or false: a mirror is not needed for the dissolving test. (a) False (b) True
39. 39.True or false: air from the balloon goes backward. (a) True (b) False
40. 40.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) oil attracts magnets (c) oil makes it rain (d) spilled oil is slippery

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