Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 243 · 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? True or false: the same glass is kept the same. (a) False (b) True
2. 2.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
3. 3.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a bicycle pump (c) a magnetic chess set (d) a fridge magnet
4. 4.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
5. 5.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) a stiff postcard (d) a sink or a bucket
6. 6.True or false: a magnetic chess set works by air pressure. (a) True (b) False
7. 7.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
8. 8.⚖️ 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 change it (b) we keep it the same (c) we measure it
9. 9.🥛 Which of these works by magnetism? (a) a magnetic pin holder (b) a drinking straw (c) a suction hook (d) a bicycle pump
10. 10.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) yeast (d) a stiff postcard
11. 11.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) yeast (c) a battery cell (d) a towel
12. 12.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) magnetism (c) air pressure (d) friction
13. 13.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
14. 14.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we change it (b) we keep it the same (c) we measure it
15. 15.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is hotter (c) it is heavier (d) it is magnetic
16. 16.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to grow plants (c) to catch any spills (d) to cool the glass
17. 17.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
18. 18.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
19. 19.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a sink or a bucket (c) a towel (d) turmeric powder
20. 20.⚖️ 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) whether the card stays (c) the same glass
21. 21.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a suction hook (c) a drinking straw (d) a medicine dropper
22. 22.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic pin holder (c) a compass needle (d) a medicine dropper
23. 23.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
24. 24.True or false: a suction hook works by air pressure. (a) True (b) False
25. 25.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
26. 26.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
27. 27.🔮 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
28. 28.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
29. 29.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a drinking straw (c) a compass needle (d) a bicycle pump
30. 30.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) a magnet (c) air pushing up (d) glue on the card
31. 31.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) over a laptop (c) near a plug point (d) on a bed
32. 32.True or false: a fridge magnet works by air pressure. (a) True (b) False
33. 33.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) True (b) False
34. 34.⚖️ 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 measure it (b) we keep it the same (c) we change it
35. 35.⚖️ 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 card (b) whether the card stays (c) how full the glass is (d) the way we turn it
36. 36.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
37. 37.True or false: a vacuum cleaner works by air pressure. (a) False (b) True
38. 38.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a medicine dropper (c) a compass needle (d) a magnetic pin holder
39. 39.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
40. 40.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed

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