Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 661 · 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.True or false: sweat drying on skin is evaporation. (a) False (b) True
2. 2.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
3. 3.🍯 Is a coin denser or less dense than water? (a) less dense than water (b) denser than water
4. 4.True or false: sugar is not needed for the dissolving test. (a) True (b) False
5. 5.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is the one thing we change. (a) True (b) False
6. 6.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) False (b) True
7. 7.🛟 Why should only a grown-up handle any hot water? (a) hot water is magnetic (b) hot water can scald (c) hot water is heavy (d) it changes colour
8. 8.True or false: a balloon is not needed for the paper helicopter. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) glucose powder (b) food colour (c) cooking oil (d) baking soda
10. 10.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
11. 11.True or false: turmeric powder is not needed for the water cycle bowl. (a) False (b) True
12. 12.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
13. 13.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the water turns green (c) the petals turn bluish (d) the flower floats away
14. 14.🧺 Which of these is not needed for the paper helicopter? (a) a balloon (b) a strip of paper (c) a pencil (d) safety scissors
15. 15.🔮 Predict: you fold the two blades the other way. What changes? (a) it falls upward (b) it does not fall (c) it turns blue (d) it spins the other way
16. 16.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
17. 17.⚖️ 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) True (b) False
18. 18.True or false: very salty water is denser than water. (a) True (b) False
19. 19.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the drop height (b) the kind of paper (c) the length of the blades (d) time to reach the floor
20. 20.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
21. 21.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we measure it (b) we change it (c) we keep it the same
22. 22.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) a toddler (d) anyone, without looking
23. 23.⚖️ 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 same glass”? (a) we keep it the same (b) we change it (c) we measure it
24. 24.🧺 Do we need a big bowl for the water cycle bowl? (a) needed (b) not needed
25. 25.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes backward (b) goes forward
26. 26.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) True (b) False
27. 27.⚖️ 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 “how much of each liquid”? (a) we measure it (b) we change it (c) we keep it the same
28. 28.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) time to dissolve (b) the water temperature (c) the amount of water
29. 29.🧺 Do we need a clock or timer for the dissolving test? (a) needed (b) not needed
30. 30.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) sticky tape (c) a mirror (d) turmeric powder
31. 31.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the stirring is kept the same. (a) False (b) True
32. 32.🧺 Which of these is not needed for the water cycle bowl? (a) a small cup (b) turmeric powder (c) water (d) ice cubes
33. 33.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) orange (c) red (d) violet
34. 34.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we measure it (b) we keep it the same (c) we change it
35. 35.🛟 How should you check if the sugar has dissolved? (a) smell it closely (b) poke it with a finger (c) look for leftover grains (d) taste it
36. 36.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is the one thing we change. (a) True (b) False
37. 37.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
38. 38.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we keep it the same (b) we measure it (c) we change it
39. 39.🧺 Do we need a long string for the balloon rocket? (a) needed (b) not needed
40. 40.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) a sunny window (c) a sheet of white paper (d) a clear glass of water

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