Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 82 · 40 questions

What you do (Air pushes): 1. Fill a plastic glass right to the top with water. 2. Lay the postcard flat on top, covering the rim. 3. Over a sink or bucket, hold the card and turn the glass upside down. 4. Slowly take your hand away from the card and watch.

1. 1.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) the same glass (b) how full the glass is (c) the same card (d) whether the card stays
2. 2.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a battery cell (c) a stiff postcard (d) turmeric powder
3. 3.True or false: a fridge magnet works by magnetism. (a) True (b) False
4. 4.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
5. 5.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we measure it (b) we keep it the same (c) we change it
6. 6.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to catch any spills (c) to grow plants (d) to cool the glass
7. 7.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
8. 8.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a battery cell (c) a balloon (d) a towel
9. 9.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
10. 10.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
11. 11.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
12. 12.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) turmeric powder (d) a stiff postcard
13. 13.🥛 Which of these works by magnetism? (a) a compass needle (b) a vacuum cleaner (c) a bicycle pump (d) a suction hook
14. 14.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the bottle is magnetic (c) the cap is sticky (d) air inside pushes back
15. 15.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
16. 16.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
17. 17.True or false: a bicycle pump works by magnetism. (a) True (b) False
18. 18.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a stiff postcard (c) a sink or a bucket (d) a towel
20. 20.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a magnetic chess set (d) a medicine dropper
21. 21.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
22. 22.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
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 way we turn it”? (a) we measure it (b) we change it (c) we keep it the same
24. 24.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a sink or bucket (c) near a plug point (d) over a laptop
25. 25.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a battery cell (c) a sink or a bucket (d) a glass of water
26. 26.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a battery cell (d) a glass of water
27. 27.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
28. 28.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) turmeric powder (c) a towel (d) a glass of water
29. 29.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) air pressure (c) magnetism (d) friction
30. 30.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a stiff postcard (c) a glass of water (d) a towel
31. 31.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we keep it the same (b) we change it (c) we measure it
32. 32.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is heavier (c) it is hotter (d) it is magnetic
33. 33.🔍 Which is the odd one out? (a) a magnetic chess set (b) a bicycle pump (c) a fridge magnet (d) a compass needle
34. 34.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) how full the glass is (b) the way we turn it (c) whether the card stays
35. 35.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
36. 36.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) yeast (c) a sink or a bucket (d) a towel
37. 37.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a towel (c) a glass of water (d) a stiff postcard
38. 38.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
39. 39.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) glue on the card (c) air pushing up (d) the cold water
40. 40.🥛 Which of these works by magnetism? (a) a suction hook (b) a fridge magnet (c) a vacuum cleaner (d) a medicine dropper

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