Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 48 · 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 needed for the paper helicopter? (a) turmeric powder (b) yeast (c) a magnet (d) a strip of paper
2. 2.⚖️ 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 change it (b) we measure it (c) we keep it the same
3. 3.🧺 Do we need honey for the density tower? (a) needed (b) not needed
4. 4.🌈 In VIBGYOR, what number colour is red?
5. 5.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we measure it (b) we keep it the same (c) we change it
6. 6.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) the water increases (b) it turns to salt (c) it turns to ice (d) some water evaporates
7. 7.🔍 Which is the odd one out? (a) food colour (b) sugar (c) chalk powder (d) baking soda
8. 8.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it speeds up (c) it travels less far (d) it travels farther
9. 9.🧺 Which of these is needed for the water cycle bowl? (a) a magnet (b) a balloon (c) turmeric powder (d) a big bowl
10. 10.🫗 Why does cooking oil float on top of water? (a) oil is heavier (b) oil is hot (c) oil is less dense (d) oil is sticky
11. 11.⚖️ 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 measure it (b) we keep it the same (c) we change it
12. 12.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the honey layer (b) in the water layer (c) on top of the oil (d) under the honey
13. 13.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we keep it the same (b) we measure it (c) we change it
14. 14.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) yeast (c) small test objects (d) a results table
15. 15.True or false: a ruler is not needed for the paper helicopter. (a) True (b) False
16. 16.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) a battery cell (c) a balloon (d) a mirror
17. 17.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) time to reach the floor (b) the length of the blades (c) the kind of paper (d) the drop height
18. 18.🌈 How many colours do we name in a rainbow (VIBGYOR)?
19. 19.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) wipe up spills at once (c) leave water on the floor (d) run around the tub
20. 20.🚢 Why can a heavy steel ship float on the sea? (a) it has a magnet (b) steel is very light (c) sea water is warm (d) its hollow shape
21. 21.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
22. 22.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
23. 23.🧺 Do we need sticky tape for the balloon rocket? (a) not needed (b) needed
24. 24.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a battery cell (b) a towel for spills (c) small test objects (d) a tub of water
25. 25.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) backward (b) straight down (c) forward (d) it stays still
26. 26.🔍 Which is the odd one out? (a) a strip of cloth (b) a cotton thread (c) a paper towel (d) a rubber eraser
27. 27.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the cap is sticky (c) the bottle is magnetic (d) water is hiding there
28. 28.🧺 Do we need a ruler for the paper helicopter? (a) needed (b) not needed
29. 29.🛟 Which rule keeps the density tower experiment safe? (a) do not lick the spoon (b) taste each layer (c) pour it on the floor (d) throw the glass
30. 30.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a toddler (d) a pet
31. 31.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) refraction (c) reflection (d) magnetism
32. 32.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a sheet of white paper (c) a battery cell (d) a mirror
33. 33.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
34. 34.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) the same glass (b) the same card (c) how full the glass is (d) the way we turn it
35. 35.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) a battery cell (c) a tall clear glass (d) a spoon
36. 36.💧 Which change is this: butter going runny? (a) melting (b) condensation (c) evaporation (d) freezing
37. 37.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of pouring (b) the same three liquids (c) the order of the layers
38. 38.🔍 Which is the odd one out? (a) baking soda (b) small pebbles (c) sugar (d) glucose powder
39. 39.True or false: a battery cell is needed for the water cycle bowl. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) a strip of cloth (b) a sugar cube (c) a cotton thread (d) a glass marble

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