Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 54 · 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 balloon rocket. Which one is NOT needed? (a) a balloon (b) sticky tape (c) a long string (d) a battery cell
2. 2.🧺 Which of these is not needed for the density tower? (a) a balloon (b) a spoon (c) honey (d) water with food colour
3. 3.🛟 Why should only a grown-up handle any hot water? (a) it changes colour (b) hot water can scald (c) hot water is magnetic (d) hot water is heavy
4. 4.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we keep it the same (b) we change it (c) we measure it
5. 5.🔍 Which is the odd one out? (a) a glass marble (b) a toy parachute (c) a coin (d) a stone
6. 6.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
7. 7.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) a magnet (c) a small cup (d) sunlight
8. 8.⚖️ 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 same window (c) the time of day (d) the same glass
9. 9.🧺 Which of these is needed for the density tower? (a) a spoon (b) yeast (c) a battery cell (d) a mirror
10. 10.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a battery cell (c) a few hours of waiting (d) a white flower
11. 11.🛟 What should you do with wet floors after the experiment? (a) pour more water (b) slide on them (c) leave them wet (d) wipe them dry
12. 12.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
13. 13.🌈 In VIBGYOR, what number colour is yellow?
14. 14.True or false: sticky tape is not needed for the balloon rocket. (a) False (b) True
15. 15.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the paper makes colours (c) water splits the light (d) the glass is painted
16. 16.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) how much of each liquid (b) the order of the layers (c) the same three liquids (d) the order of pouring
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we keep it the same (b) we measure it (c) we change it
18. 18.True or false: a battery cell is needed for the balloon rocket. (a) True (b) False
19. 19.🧺 Which of these is not needed for the paper helicopter? (a) a strip of paper (b) a pencil (c) a paper clip (d) a magnet
20. 20.🍯 Which of these is denser than water? (a) air (b) very salty water (c) an ice cube (d) cooking oil
21. 21.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a solution (c) a rainbow (d) a magnet
22. 22.True or false: a battery cell is needed for the paper helicopter. (a) True (b) False
23. 23.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
24. 24.True or false: sugar in icy water dissolves faster. (a) False (b) True
25. 25.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is what we measure. (a) True (b) False
26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) yeast (d) a glass of water
27. 27.True or false: honey is denser than water. (a) False (b) True
28. 28.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
29. 29.True or false: a stone falls slowly through the air. (a) True (b) False
30. 30.True or false: a teaspoon is needed for the dissolving test. (a) True (b) False
31. 31.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
32. 32.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a balloon (c) a drinking straw (d) turmeric powder
33. 33.🧺 Which of these is needed for the density tower? (a) a magnet (b) a tall clear glass (c) yeast (d) turmeric powder
34. 34.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a mirror (c) a stiff postcard (d) a sink or a bucket
35. 35.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it rains on them (d) it is sprayed on
36. 36.🚁 Why do we clip a paper clip to the bottom of the helicopter? (a) to stop the spinning (b) to weigh down the bottom (c) to make it magnetic (d) to make it fall slower
37. 37.🌈 How many colours do we name in a rainbow (VIBGYOR)?
38. 38.🧺 Do we need yeast for the paper helicopter? (a) not needed (b) needed
39. 39.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) it turns to ice (b) it turns to salt (c) the water increases (d) some water evaporates
40. 40.📘 What is water vapour? (a) salty water (b) tiny ice cubes (c) a kind of smoke (d) water as a gas

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