Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 192 · 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.🥄 Which of these does not dissolve in water? (a) glucose powder (b) baking soda (c) chalk powder (d) table salt
2. 2.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals are magnetic (c) petals lose water to air (d) petals like colour
3. 3.🌈 In VIBGYOR, what number colour is violet?
4. 4.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is what we measure. (a) True (b) False
5. 5.True or false: chalk powder dissolves in water. (a) False (b) True
6. 6.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
7. 7.🧺 Which of these is needed for the water cycle bowl? (a) yeast (b) a small cup (c) a magnet (d) a balloon
8. 8.⚖️ 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
9. 9.⚖️ 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 change it (b) we keep it the same (c) we measure it
10. 10.🔍 Which is the odd one out? (a) honey (b) cooking oil (c) a ping-pong ball (d) air
11. 11.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
12. 12.🧺 Which of these is needed for the paper helicopter? (a) a balloon (b) turmeric powder (c) a pencil (d) a battery cell
13. 13.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) a spoon (c) honey (d) turmeric powder
14. 14.🧺 Do we need a balloon for the balloon rocket? (a) needed (b) not needed
15. 15.True or false: a mirror is needed for the water rainbow. (a) True (b) False
16. 16.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the water turns green (d) the petals turn bluish
17. 17.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
18. 18.⚖️ 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 measure it (c) we keep it the same
19. 19.⚖️ 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
20. 20.🚁 Dropped from a raised hand, does a toy parachute fall slowly or fast? (a) falls fast (b) falls slowly
21. 21.🛟 What should you do after handling food colour? (a) wash your hands (b) lick your fingers (c) rub your eyes (d) wipe them on walls
22. 22.🔍 Which is the odd one out? (a) a stone (b) a crumpled paper ball (c) a steel spoon (d) a paper helicopter
23. 23.🛟 What should you do with popped balloon pieces? (a) chew them (b) throw them away safely (c) keep them in your mouth (d) give them to a baby
24. 24.🛟 Which rule keeps the density tower experiment safe? (a) pour it on the floor (b) taste each layer (c) throw the glass (d) do not lick the spoon
25. 25.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
26. 26.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it travels less far (c) it goes backward first (d) it travels farther
27. 27.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is kept the same. (a) False (b) True
28. 28.🛟 Does a pebble float or sink in water? (a) sinks (b) floats
29. 29.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) food colour (c) a few hours of waiting (d) a glass of water
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) yeast (d) a glass of water
31. 31.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the cling film cover is the one thing we change. (a) True (b) False
32. 32.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) they never dry (b) slower (c) faster (d) they turn to ice
33. 33.True or false: small test objects is not needed for the float-or-sink test. (a) False (b) True
34. 34.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is what we measure. (a) False (b) True
35. 35.🧺 Which of these is not needed for the density tower? (a) a magnet (b) a tall clear glass (c) a spoon (d) water with food colour
36. 36.True or false: turmeric powder is needed for the float-or-sink test. (a) False (b) True
37. 37.🔮 Predict: you add two more paper clips. How does it fall? (a) it floats up (b) faster (c) slower (d) it stops in the air
38. 38.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) bright sunlight (c) a clear glass of water (d) a magnet
39. 39.🧺 Do we need yeast for the water cycle bowl? (a) needed (b) not needed
40. 40.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it turns blue (c) it floats higher (d) it sinks

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