Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 754 · 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: a magnetic chess set works by magnetism. (a) False (b) True
2. 2.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) honey (c) a spoon (d) turmeric powder
3. 3.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) False (b) True
4. 4.True or false: a mirror is not needed for the balloon rocket. (a) True (b) False
5. 5.🛟 Which rule keeps the density tower experiment safe? (a) throw the glass (b) do not lick the spoon (c) taste each layer (d) pour it on the floor
6. 6.True or false: yeast is needed for the water rainbow. (a) False (b) True
7. 7.🧺 Which of these is needed for the density tower? (a) a mirror (b) water with food colour (c) a balloon (d) a battery cell
8. 8.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) two chairs (c) turmeric powder (d) a magnet
9. 9.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a mirror (b) a results table (c) a towel for spills (d) small test objects
10. 10.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: time to reach the floor is what we measure. (a) False (b) True
11. 11.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) sticky tape (c) turmeric powder (d) two chairs
12. 12.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we change it (b) we keep it the same (c) we measure it
13. 13.⚖️ 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 the layers”? (a) we keep it the same (b) we measure it (c) we change it
14. 14.True or false: an ice cube is denser than water. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) a bicycle pump (b) a fridge magnet (c) a magnetic chess set (d) a magnetic pin holder
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the tub of water (b) the shape of the clay (c) whether it floats (d) the amount of clay
17. 17.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes forward (b) goes backward
18. 18.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the same window (b) the amount of water (c) the time of day (d) brightness of rainbow
19. 19.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
20. 20.True or false: a mirror is needed for the water rainbow. (a) False (b) True
21. 21.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a few hours of waiting (d) a mirror
22. 22.🚁 Why do we clip a paper clip to the bottom of the helicopter? (a) to weigh down the bottom (b) to make it fall slower (c) to stop the spinning (d) to make it magnetic
23. 23.⚖️ 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 same white paper (b) the amount of water (c) brightness of rainbow (d) the time of day
24. 24.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of water is kept the same. (a) True (b) False
25. 25.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
26. 26.🧺 Do we need safety scissors for the paper helicopter? (a) not needed (b) needed
27. 27.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it sinks (c) it still floats (d) it turns white
28. 28.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same string (b) how big we blow it (c) distance it travels (d) the same tape
29. 29.🔍 Which is the odd one out? (a) cooking oil (b) sand (c) sawdust (d) table salt
30. 30.True or false: sugar in warm water dissolves faster. (a) True (b) False
31. 31.⚖️ 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
32. 32.🧺 Which of these is not needed for the density tower? (a) water with food colour (b) honey (c) yeast (d) cooking oil
33. 33.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
34. 34.🍯 Is cooking oil denser or less dense than water? (a) denser than water (b) less dense than water
35. 35.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same glass is kept the same. (a) False (b) True
36. 36.True or false: a glass marble falls slowly through the air. (a) True (b) False
37. 37.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we change it (b) we keep it the same (c) we measure it
38. 38.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) sharp kitchen shears (c) gardening shears (d) safety scissors
39. 39.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) a balloon (d) bright sunlight
40. 40.True or false: warm water is needed for the dissolving test. (a) True (b) False

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