Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 801 · 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 — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the same three liquids”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.💧 What happens to water vapour when it touches the cold cling film? (a) it turns to smoke (b) it disappears (c) it turns to salt (d) it turns to drops
3. 3.True or false: the rowing boat goes forward. (a) True (b) False
4. 4.🌊 What pushes a floating cork upward? (a) the tub (b) the cork itself (c) the water (d) the air above
5. 5.🔍 Which is the odd one out? (a) a metal key (b) a steel spoon (c) a glass marble (d) a cork
6. 6.🚁 Dropped from a raised hand, does a steel spoon fall slowly or fast? (a) falls fast (b) falls slowly
7. 7.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) a balloon (c) a ruler (d) a strip of paper
8. 8.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) a coin (b) a pebble (c) very salty water (d) an ice cube
10. 10.🧺 Do we need cotton wool for the dissolving test? (a) needed (b) not needed
11. 11.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of the layers (b) the order of pouring (c) the same three liquids
12. 12.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we change it (b) we measure it (c) we keep it the same
13. 13.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) two clear glasses (c) a mirror (d) a clock or timer
14. 14.🧺 Which of these is not needed for the balloon rocket? (a) sticky tape (b) a drinking straw (c) a long string (d) a mirror
15. 15.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed
16. 16.🔮 Predict: you add two more paper clips. How does it fall? (a) it stops in the air (b) faster (c) it floats up (d) slower
17. 17.💧 Why do water drops form on the outside of a glass of ice water? (a) ice escapes the glass (b) the glass sweats (c) vapour in air cools (d) the glass leaks
18. 18.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
19. 19.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) a balloon (d) bright sunlight
20. 20.True or false: the rocket goes backward. (a) False (b) True
21. 21.🛟 Which of these floats on water? (a) a ball of clay (b) an iron nail (c) a piece of thermocol (d) a glass marble
22. 22.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks
23. 23.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the amount of water”? (a) we change it (b) we keep it the same (c) we measure it
24. 24.🛟 Which is a safe rule for the balloon rocket? (a) blow it till it bursts (b) aim it at your friend (c) put string round a neck (d) keep it away from faces
25. 25.True or false: cotton wool is not needed for the dissolving test. (a) True (b) False
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 kept the same. (a) True (b) False
27. 27.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it turns to stone (c) it can float (d) it dissolves
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.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is the one thing we change. (a) False (b) True
30. 30.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns brighter (c) it turns all red (d) it floats away
31. 31.⚖️ 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
32. 32.⚖️ 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) True (b) False
33. 33.🔍 Which is the odd one out? (a) a paper towel (b) a steel spoon (c) a flower stem (d) a piece of chalk
34. 34.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
35. 35.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
36. 36.🛟 Why should we wipe up spilled oil at once? (a) spilled oil is slippery (b) oil makes it rain (c) oil attracts magnets (d) oil turns into honey
37. 37.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the same three liquids (b) how much of each liquid (c) the same glass (d) the order of the layers
38. 38.True or false: a mirror is needed for the water cycle bowl. (a) False (b) True
39. 39.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a drinking straw (c) a suction hook (d) a magnetic pin holder
40. 40.🧺 Do we need honey for the dissolving test? (a) not needed (b) needed

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