Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 908 · 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.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a sunny window (c) bright sunlight (d) a battery cell
2. 2.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we keep it the same (b) we change it (c) we measure it
3. 3.🛟 Which of these floats on water? (a) an iron nail (b) a metal key (c) a dry leaf (d) a coin
4. 4.🌈 In VIBGYOR, what number colour is orange?
5. 5.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) distance it travels (b) the slope of the string (c) how big we blow it (d) the same straw
6. 6.True or false: a glass marble does not let water climb. (a) False (b) True
7. 7.True or false: a big sugar cube dissolves faster. (a) True (b) False
8. 8.🧺 Which of these is not needed for the dissolving test? (a) warm water (b) sugar (c) cold water (d) a mirror
9. 9.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) the way we turn it (b) how full the glass is (c) whether the card stays
10. 10.⚖️ 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) time for colour to show (b) the length of the stem (c) the room it stands in (d) the amount of water
11. 11.🔍 Which is the odd one out? (a) ice becoming water (b) butter going runny (c) a pond icing over (d) snow turning to water
12. 12.🚁 Which of these falls slowly through the air? (a) a feather (b) a crumpled paper ball (c) a stone (d) a coin
13. 13.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the kind of paper is the one thing we change. (a) True (b) False
14. 14.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
15. 15.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) sticky tape (c) a balloon (d) a magnet
16. 16.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a stiff postcard (c) a glass of water (d) a sink or a bucket
17. 17.True or false: a magnetic chess set works by air pressure. (a) False (b) True
18. 18.🧺 Do we need a drinking straw for the balloon rocket? (a) needed (b) not needed
19. 19.True or false: cotton wool is needed for the dissolving test. (a) True (b) False
20. 20.🌈 How many colours do we name in a rainbow (VIBGYOR)?
21. 21.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
22. 22.⚖️ 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
23. 23.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) wipe them on walls
24. 24.True or false: a cork is denser than water. (a) True (b) False
25. 25.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) both the same (c) the sugar cube (d) powdered sugar
26. 26.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals are magnetic (c) the stem is hot (d) petals like colour
27. 27.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
28. 28.🧺 Do we need a battery cell for the paper helicopter? (a) needed (b) not needed
29. 29.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we measure it (b) we keep it the same (c) we change it
30. 30.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) ice cubes (b) a small cup (c) a balloon (d) sunlight
31. 31.🧺 Which of these is needed for the water rainbow? (a) a sunny window (b) a balloon (c) a battery cell (d) turmeric powder
32. 32.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) a battery cell (c) a mirror (d) a magnet
33. 33.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) run around the tub (c) play near a deep pond (d) wipe up spills at once
34. 34.🚀 Which of these goes backward? (a) the rowing boat (b) the swimmer (c) the rocket (d) water from the oars
35. 35.🧺 Which of these is not needed for the float-or-sink test? (a) a balloon (b) a results table (c) a tub of water (d) small test objects
36. 36.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
37. 37.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the water layer (b) in the oil layer (c) on top of the oil (d) at the very bottom
38. 38.🚁 Dropped from a raised hand, does a crumpled paper ball fall slowly or fast? (a) falls fast (b) falls slowly
39. 39.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is kept the same. (a) False (b) True
40. 40.🍯 Is an ice cube denser or less dense than water? (a) denser than water (b) less dense than water

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