Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 871 · 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 rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it through glass (c) look at it in a mirror (d) never look at the Sun
2. 2.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) two chairs (c) a long string (d) yeast
3. 3.🧺 Which of these is needed for the paper helicopter? (a) a paper clip (b) yeast (c) a balloon (d) turmeric powder
4. 4.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a compass needle (d) a vacuum cleaner
6. 6.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is kept the same. (a) True (b) False
7. 7.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a balloon (c) a clear glass of water (d) a sunny window
8. 8.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we measure it (b) we keep it the same (c) we change it
9. 9.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is what we measure. (a) True (b) False
10. 10.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) backward (b) it stays still (c) straight down (d) forward
11. 11.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
12. 12.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
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 glass”? (a) we keep it the same (b) we measure it (c) we change it
14. 14.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) safety scissors (c) gardening shears (d) a paper cutter
15. 15.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we change it (b) we measure it (c) we keep it the same
16. 16.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) how big we blow it (b) the same straw (c) the same tape (d) the slope of the string
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a mirror (c) a glass of water (d) a white flower
18. 18.🧺 Which of these is not needed for the dissolving test? (a) a teaspoon (b) sugar (c) cold water (d) a balloon
19. 19.True or false: air is less dense than water. (a) True (b) False
20. 20.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
21. 21.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the size of the bowl”? (a) we change it (b) we keep it the same (c) we measure it
22. 22.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) a mirror (c) two chairs (d) a battery cell
23. 23.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
24. 24.💧 Which of these does not let water climb? (a) a piece of chalk (b) a sugar cube (c) a piece of foil (d) a flower stem
25. 25.True or false: a magnet is needed for the float-or-sink test. (a) True (b) False
26. 26.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) the same straw (c) how big we blow it
27. 27.True or false: cotton wool is not needed for the dissolving test. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) sand (b) glucose powder (c) food colour (d) sugar
29. 29.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
30. 30.📘 What does “dense” mean? (a) very hot (b) very thin (c) very colourful (d) heavy for its size
31. 31.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the kind of paper (b) time to reach the floor (c) the length of the blades (d) the drop height
32. 32.🥄 Which of these dissolves faster? (a) sugar stirred well (b) a big sugar cube (c) sugar in icy water (d) sugar left unstirred
33. 33.🧺 Which of these is needed for the density tower? (a) a battery cell (b) yeast (c) a balloon (d) honey
34. 34.True or false: a battery cell is not needed for the water cycle bowl. (a) False (b) True
35. 35.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) a mirror (c) warm water (d) sugar
36. 36.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a towel for spills (c) a tub of water (d) turmeric powder
37. 37.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to win a prize (c) to splash everyone (d) to keep children safe
38. 38.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
39. 39.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it sank as sand (b) it became air (c) it spread in the water (d) it vanished for ever
40. 40.🧺 Which of these is needed for the water cycle bowl? (a) turmeric powder (b) a balloon (c) yeast (d) cling film

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