Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 907 · 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 water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) yeast (d) bright sunlight
2. 2.⚖️ 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 glass (b) the time of day (c) brightness of rainbow (d) the same white paper
3. 3.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
4. 4.True or false: a ruler is not needed for the paper helicopter. (a) False (b) True
5. 5.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) a balloon (c) a tall clear glass (d) water with food colour
6. 6.⚖️ 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 three liquids is kept the same. (a) True (b) False
7. 7.🚀 Which of these goes forward? (a) gas from the rocket (b) air from the balloon (c) water a swimmer pushes (d) the rowing boat
8. 8.🛟 Which of these floats on water? (a) a glass marble (b) a feather (c) a coin (d) a steel spoon
9. 9.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is the one thing we change. (a) False (b) True
10. 10.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a mirror (c) a white flower (d) a magnet
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we measure it (b) we change it (c) we keep it the same
12. 12.🧺 Do we need a battery cell for the density tower? (a) not needed (b) needed
13. 13.🥄 Which of these dissolves in water? (a) cooking oil (b) sand (c) food colour (d) sawdust
14. 14.💧 Which change is this: a puddle drying up? (a) condensation (b) evaporation (c) freezing (d) melting
15. 15.🔍 Which is the odd one out? (a) a stone (b) a feather (c) a glass marble (d) a crumpled paper ball
16. 16.🧺 Do we need yeast for the density tower? (a) needed (b) not needed
17. 17.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) leave water on the floor (c) wipe up spills at once (d) play near a deep pond
18. 18.True or false: a balloon is needed for the water cycle bowl. (a) True (b) False
19. 19.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) powdered sugar (c) the sugar cube (d) both the same
20. 20.True or false: a drinking straw is not needed for the balloon rocket. (a) True (b) False
21. 21.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is kept the same. (a) False (b) True
22. 22.🥄 Which of these dissolves faster? (a) a big sugar cube (b) sugar left unstirred (c) powdered sugar (d) sugar in icy water
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 three liquids”? (a) we keep it the same (b) we measure it (c) we change it
24. 24.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) yeast (c) a mirror (d) sticky tape
25. 25.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we measure it (b) we keep it the same (c) we change it
26. 26.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) two chairs (c) a balloon (d) vinegar
27. 27.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) yeast (c) turmeric powder (d) a towel for spills
28. 28.True or false: honey is denser than water. (a) True (b) False
29. 29.🛟 What should you do with popped balloon pieces? (a) keep them in your mouth (b) give them to a baby (c) chew them (d) throw them away safely
30. 30.True or false: a comb is needed for the dissolving test. (a) False (b) True
31. 31.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) backward (b) forward (c) it stays still (d) straight down
32. 32.⚖️ 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
33. 33.🧺 Do we need a battery cell for the float-or-sink test? (a) not needed (b) needed
34. 34.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
35. 35.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we keep it the same (b) we change it (c) we measure it
36. 36.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is kept the same. (a) False (b) True
37. 37.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we keep it the same (b) we change it (c) we measure it
38. 38.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) False (b) True
39. 39.⚖️ 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 amount of clay (b) the shape of the clay (c) the tub of water (d) whether it floats
40. 40.True or false: cold water is not needed for the dissolving test. (a) True (b) False

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