Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 753 · 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.⚖️ 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 measure it (b) we keep it the same (c) we change it
2. 2.🧺 Do we need a battery cell for the density tower? (a) not needed (b) needed
3. 3.🔍 Which is the odd one out? (a) a feather (b) a coin (c) a toy parachute (d) an open sheet of paper
4. 4.True or false: a glass marble is denser than water. (a) True (b) False
5. 5.True or false: a compass needle works by air pressure. (a) False (b) True
6. 6.🧺 Which of these is not needed for the card-on-a-glass trick? (a) yeast (b) a towel (c) a sink or a bucket (d) a glass of water
7. 7.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
8. 8.🧺 Which of these is not needed for the water cycle bowl? (a) ice cubes (b) yeast (c) cling film (d) a small cup
9. 9.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes less far (b) it goes much farther (c) it turns into a kite (d) it flies off the string
10. 10.🧺 Which of these is not needed for the water cycle bowl? (a) a balloon (b) a big bowl (c) ice cubes (d) water
11. 11.🌈 In VIBGYOR, what number colour is yellow?
12. 12.True or false: a paper helicopter falls fast through the air. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) water becoming ice (b) wet hair drying (c) sweat drying on skin (d) a puddle drying up
14. 14.True or false: yeast is not needed for the density tower. (a) False (b) True
15. 15.🔍 Sugar is stirred into water and seems to disappear. Where did it go? (a) it became air (b) it sank as sand (c) it spread in the water (d) it vanished for ever
16. 16.💧 Which change is this: sweat drying on skin? (a) melting (b) evaporation (c) freezing (d) condensation
17. 17.🔍 Which is the odd one out? (a) a coin (b) a crumpled paper ball (c) an open sheet of paper (d) a steel spoon
18. 18.True or false: cooking oil is not needed for the density tower. (a) True (b) False
19. 19.🔍 Which is the odd one out? (a) an open sheet of paper (b) a paper helicopter (c) a steel spoon (d) a feather
20. 20.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they fall off at once (c) they stay white (d) they turn two colours
21. 21.🧺 Do we need a big bowl for the water cycle bowl? (a) not needed (b) needed
22. 22.🚁 Dropped from a raised hand, does a fluff of cotton fall slowly or fast? (a) falls slowly (b) falls fast
23. 23.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we keep it the same (b) we measure it (c) we change it
24. 24.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a sink or a bucket (d) turmeric powder
25. 25.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) gardening shears (c) safety scissors (d) sharp kitchen shears
26. 26.🔍 Which is the odd one out? (a) a paper helicopter (b) a fluff of cotton (c) a crumpled paper ball (d) a toy parachute
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) a few hours of waiting (d) a mirror
28. 28.True or false: small test objects is not needed for the float-or-sink test. (a) False (b) True
29. 29.🧺 Which of these is needed for the density tower? (a) a balloon (b) water with food colour (c) turmeric powder (d) a magnet
30. 30.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) oil attracts magnets (c) spilled oil is slippery (d) oil makes it rain
31. 31.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) the rainbow fades (c) it turns all red (d) it floats away
32. 32.💧 Which of these does not let water climb? (a) a cotton thread (b) a rubber eraser (c) a piece of chalk (d) a strip of cloth
33. 33.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) a battery cell (c) honey (d) water with food colour
34. 34.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) powdered sugar (b) both the same (c) neither of them (d) the sugar cube
35. 35.🔍 Which is the odd one out? (a) a flower stem (b) a strip of cloth (c) a cotton thread (d) a rubber eraser
36. 36.🌈 How many colours do we name in a rainbow (VIBGYOR)?
37. 37.🧺 Do we need cooking oil for the density tower? (a) needed (b) not needed
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
39. 39.True or false: water is not needed for the water cycle bowl. (a) False (b) True
40. 40.⚖️ 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 measure it (b) we keep it the same (c) we change it

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