Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 685 · 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 battery cell is not needed for the float-or-sink test. (a) False (b) True
2. 2.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) a clear glass of water (d) a mirror
3. 3.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) oil makes it rain (c) spilled oil is slippery (d) oil attracts magnets
4. 4.🥄 Which of these dissolves slower? (a) powdered sugar (b) sugar stirred well (c) sugar in warm water (d) sugar left unstirred
5. 5.🥄 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
6. 6.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we keep it the same (b) we measure it (c) we change it
7. 7.💧 Which change is this: butter going runny? (a) evaporation (b) condensation (c) freezing (d) melting
8. 8.🧺 Which of these is needed for the dissolving test? (a) a balloon (b) a mirror (c) cold water (d) cotton wool
9. 9.🥄 Which of these dissolves slower? (a) sugar stirred well (b) powdered sugar (c) sugar in warm water (d) a big sugar cube
10. 10.True or false: a big bowl is not needed for the water cycle bowl. (a) False (b) True
11. 11.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) throw the glass (c) do not lick the spoon (d) pour it on the floor
12. 12.🧺 Do we need yeast for the water cycle bowl? (a) needed (b) not needed
13. 13.True or false: warm water is not needed for the dissolving test. (a) True (b) False
14. 14.🧺 Do we need cooking oil for the density tower? (a) needed (b) not needed
15. 15.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) a paper clip (c) a battery cell (d) safety scissors
16. 16.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the honey layer (b) in the water layer (c) under the honey (d) on top of the oil
17. 17.⚖️ 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 measure it (b) we change it (c) we keep it the same
18. 18.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) the sugar turns to salt (c) some stays undissolved (d) all of it dissolves
19. 19.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) False (b) True
20. 20.⚖️ 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
21. 21.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) less friction (b) it goes faster (c) more friction, less far (d) no change at all
22. 22.⚖️ 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 kept the same. (a) False (b) True
23. 23.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) a magnet (c) a long string (d) turmeric powder
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a few hours of waiting (c) a white flower (d) a glass of water
25. 25.🧺 Which of these is not needed for the paper helicopter? (a) a paper clip (b) a balloon (c) a pencil (d) a strip of paper
26. 26.💧 Which of these is evaporation? (a) wet clothes drying (b) making ice lollies (c) dew on morning grass (d) drops under a pot lid
27. 27.🔍 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
28. 28.True or false: a sugar cube lets water climb up it. (a) False (b) True
29. 29.🧺 Do we need a ruler for the paper helicopter? (a) not needed (b) needed
30. 30.True or false: a magnet is needed for the density tower. (a) True (b) False
31. 31.🚁 Dropped from a raised hand, does a stone fall slowly or fast? (a) falls slowly (b) falls fast
32. 32.True or false: a compass needle works by air pressure. (a) False (b) True
33. 33.True or false: a tall clear glass is not needed for the density tower. (a) True (b) False
34. 34.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it goes backward first (c) it travels less far (d) it speeds up
35. 35.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we keep it the same (b) we measure it (c) we change it
36. 36.True or false: a mirror is needed for the float-or-sink test. (a) True (b) False
37. 37.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
38. 38.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “how many drops form”? (a) we measure it (b) we change it (c) we keep it the same
39. 39.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
40. 40.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) air pushes it up (c) the straw is magnetic (d) juice likes plastic

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