Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 86 · 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: air from the balloon goes forward. (a) True (b) False
2. 2.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
3. 3.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
4. 4.🌈 How many colours do we name in a rainbow (VIBGYOR)?
5. 5.True or false: gas from the rocket goes backward. (a) False (b) True
6. 6.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is what we measure. (a) True (b) False
7. 7.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is the one thing we change. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) a cork (b) a piece of thermocol (c) a ping-pong ball (d) a pebble
9. 9.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the paper clip is what we measure. (a) True (b) False
10. 10.🌈 In VIBGYOR, what number colour is green?
11. 11.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) play near a deep pond (c) run around the tub (d) wipe up spills at once
12. 12.🔍 Which is the odd one out? (a) a pebble (b) an iron nail (c) a steel spoon (d) a feather
13. 13.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to make it rain (c) to cool the glass (d) to catch any spills
14. 14.🛟 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
15. 15.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
16. 16.🧺 Which of these is not needed for the density tower? (a) a magnet (b) honey (c) a tall clear glass (d) water with food colour
17. 17.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is the one thing we change. (a) False (b) True
18. 18.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we measure it (b) we change it (c) we keep it the same
19. 19.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) nothing ever happens (d) it sinks at once
20. 20.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we change it (b) we measure it (c) we keep it the same
21. 21.🧺 Which of these is not needed for the water cycle bowl? (a) sunlight (b) a small cup (c) a big bowl (d) a mirror
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 keep it the same (c) we change it
23. 23.📘 What do we call light bending as it passes from air into water? (a) reflection (b) evaporation (c) magnetism (d) refraction
24. 24.🧺 Which of these is needed for the water cycle bowl? (a) turmeric powder (b) a mirror (c) a big bowl (d) yeast
25. 25.True or false: a magnet is needed for the float-or-sink test. (a) False (b) True
26. 26.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) False (b) True
27. 27.🛟 Which rule keeps the density tower experiment safe? (a) do not lick the spoon (b) throw the glass (c) pour it on the floor (d) taste each layer
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) False (b) True
29. 29.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a magnet (c) a sheet of white paper (d) a sunny window
30. 30.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is what we measure. (a) True (b) False
31. 31.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it is heavier (d) it will not break
32. 32.🛟 Why should only a grown-up handle any hot water? (a) hot water can scald (b) it changes colour (c) hot water is magnetic (d) hot water is heavy
33. 33.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we measure it (b) we keep it the same (c) we change it
34. 34.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a stone (d) an open sheet of paper
35. 35.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is what we measure. (a) False (b) True
36. 36.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
37. 37.🥄 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
38. 38.True or false: a glass marble is less dense than water. (a) False (b) True
39. 39.📘 What does “dense” mean? (a) heavy for its size (b) very hot (c) very colourful (d) very thin
40. 40.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a suction hook (d) a magnetic pin holder

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