Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 797 · 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 density tower. Which one is NOT needed? (a) water with food colour (b) honey (c) turmeric powder (d) cooking oil
2. 2.True or false: honey is not needed for the dissolving test. (a) False (b) True
3. 3.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) yeast (c) a glass of water (d) turmeric powder
4. 4.⚖️ 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 glass (b) the amount of water (c) the same white paper (d) the same window
5. 5.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is heavier (c) it is magnetic (d) it will not break
6. 6.True or false: cold water is needed for the dissolving test. (a) True (b) False
7. 7.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the drop height”? (a) we keep it the same (b) we change it (c) we measure it
8. 8.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) yeast (b) cooking oil (c) honey (d) a tall clear glass
9. 9.True or false: a flower stem lets water climb up it. (a) True (b) False
10. 10.True or false: a magnet is not needed for the paper helicopter. (a) False (b) True
11. 11.🚀 Which of these goes forward? (a) air from the balloon (b) gas from the rocket (c) the rocket (d) water from the oars
12. 12.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) a paper cutter (c) gardening shears (d) safety scissors
13. 13.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) how big we blow it (b) distance it travels (c) the same string
14. 14.True or false: a battery cell is not needed for the water cycle bowl. (a) False (b) True
15. 15.🥄 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
16. 16.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we measure it (b) we change it (c) we keep it the same
17. 17.True or false: a glass marble sinks in water. (a) False (b) True
18. 18.⚖️ 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 change it (b) we measure it (c) we keep it the same
19. 19.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a mirror (b) safety scissors (c) a paper clip (d) a pencil
20. 20.🧺 Do we need sunlight for the water cycle bowl? (a) not needed (b) needed
21. 21.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we change it (b) we keep it the same (c) we measure it
22. 22.⚖️ 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 pouring”? (a) we measure it (b) we change it (c) we keep it the same
23. 23.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) never look at the Sun (c) stare at the Sun (d) look at it in a mirror
24. 24.💧 In the covered bowl, where does the water vapour come from? (a) the air outside (b) the bowl itself (c) water warmed by the Sun (d) the cling film
25. 25.True or false: wet clothes drying is evaporation. (a) True (b) False
26. 26.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) a magnet (c) a spoon (d) a tall clear glass
27. 27.🚁 Dropped from a raised hand, does a coin fall slowly or fast? (a) falls fast (b) falls slowly
28. 28.⚖️ 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
29. 29.🛟 Where is a safe place to drop the helicopter from? (a) a high window ledge (b) a roof edge (c) a wobbly chair (d) from your raised hand
30. 30.🛟 What should you do after handling food colour? (a) wash your hands (b) wipe them on walls (c) rub your eyes (d) lick your fingers
31. 31.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) pour it on the floor (c) throw the glass (d) do not lick the spoon
32. 32.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
33. 33.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) sun or shade (b) the amount of water (c) how many drops form (d) the size of the bowl
34. 34.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the kind of paper (b) the drop height (c) the paper clip (d) the length of the blades
35. 35.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) straight down (b) backward (c) forward (d) it stays still
36. 36.🛟 What should you do with wet floors after the experiment? (a) leave them wet (b) pour more water (c) slide on them (d) wipe them dry
37. 37.🧺 Do we need yeast for the balloon rocket? (a) not needed (b) needed
38. 38.True or false: a coin floats on water. (a) True (b) False
39. 39.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
40. 40.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we measure it (b) we change it (c) we keep it the same

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