Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 712 · 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.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) the same (b) slower (c) faster (d) not at all
2. 2.🔍 Which is the odd one out? (a) a coin (b) a piece of thermocol (c) an ice cube (d) an empty capped bottle
3. 3.🥛 Which of these works by magnetism? (a) a compass needle (b) a medicine dropper (c) a suction hook (d) a bicycle pump
4. 4.🌈 How many colours do we name in a rainbow (VIBGYOR)?
5. 5.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
6. 6.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we measure it (b) we change it (c) we keep it the same
7. 7.True or false: sugar does not dissolve in water. (a) True (b) False
8. 8.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
9. 9.🎈 What is the job of the straw on the string? (a) it blows air in (b) it holds water (c) it makes it heavier (d) it guides the balloon
10. 10.🔍 Which is the odd one out? (a) a pond icing over (b) water becoming ice (c) making ice lollies (d) wet hair drying
11. 11.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is the one thing we change. (a) False (b) True
12. 12.🧺 Do we need honey for the density tower? (a) not needed (b) needed
13. 13.True or false: a ruler is not needed for the paper helicopter. (a) False (b) True
14. 14.🍯 Is cooking oil denser or less dense than water? (a) denser than water (b) less dense than water
15. 15.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is kept the same. (a) False (b) True
16. 16.True or false: cling film is not needed for the water cycle bowl. (a) False (b) True
17. 17.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the amount of sugar (b) time to dissolve (c) the amount of water (d) the water temperature
18. 18.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
19. 19.🛟 What should you do with popped balloon pieces? (a) chew them (b) keep them in your mouth (c) throw them away safely (d) give them to a baby
20. 20.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a pencil (b) a ruler (c) a mirror (d) a paper clip
21. 21.🛟 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
22. 22.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the water temperature (b) the stirring (c) the amount of water (d) time to dissolve
23. 23.True or false: sugar stirred well dissolves faster. (a) True (b) False
24. 24.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a balloon (c) a glass of water (d) yeast
25. 25.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) cooking oil (c) water with food colour (d) yeast
26. 26.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
27. 27.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is the one thing we change. (a) True (b) False
28. 28.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) the rainbow fades (c) it turns all red (d) it turns brighter
29. 29.🧺 Do we need yeast for the paper helicopter? (a) needed (b) not needed
30. 30.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is kept the same. (a) False (b) True
32. 32.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we measure it (b) we change it (c) we keep it the same
33. 33.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we measure it (b) we change it (c) we keep it the same
34. 34.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) a sunny window (c) bright sunlight (d) a clear glass of water
35. 35.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) True (b) False
36. 36.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) a mirror (c) a balloon (d) yeast
37. 37.⚖️ 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) how full the glass is (b) whether the card stays (c) the way we turn it
38. 38.True or false: table salt does not dissolve in water. (a) True (b) False
39. 39.⚖️ 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) how much of each liquid (b) the order of pouring (c) the order of the layers
40. 40.🧺 Do we need a long string for the balloon rocket? (a) needed (b) not needed

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