Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 341 · 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.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a stiff postcard (c) a balloon (d) a towel
2. 2.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a battery cell (d) a sink or a bucket
3. 3.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a sink or a bucket (d) a balloon
4. 4.🔍 Which is the odd one out? (a) a suction hook (b) a medicine dropper (c) a vacuum cleaner (d) a magnetic chess set
5. 5.⚖️ 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
6. 6.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
7. 7.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is heavier (c) it will not break (d) it is magnetic
8. 8.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a medicine dropper (c) a compass needle (d) a fridge magnet
9. 9.True or false: a magnetic chess set works by magnetism. (a) False (b) True
10. 10.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
11. 11.🥛 Which of these works by air pressure? (a) a compass needle (b) a medicine dropper (c) a magnetic chess set (d) a magnetic pin holder
12. 12.🥛 Which of these works by magnetism? (a) a drinking straw (b) a vacuum cleaner (c) a fridge magnet (d) a medicine dropper
13. 13.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the card stays on (c) the glass breaks (d) the card flies away
14. 14.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
15. 15.True or false: a compass needle works by air pressure. (a) False (b) True
16. 16.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) the same card (b) the same glass (c) the way we turn it (d) whether the card stays
17. 17.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) over a sink or bucket (d) on a bed
18. 18.True or false: a fridge magnet works by air pressure. (a) True (b) False
19. 19.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) a suction hook (b) a drinking straw (c) a compass needle (d) a bicycle pump
21. 21.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to cool the glass (c) to catch any spills (d) to make it rain
22. 22.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
23. 23.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a fridge magnet (d) a suction hook
24. 24.🔍 Which is the odd one out? (a) a suction hook (b) a vacuum cleaner (c) a drinking straw (d) a magnetic pin holder
25. 25.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) the cap is sticky (c) water is hiding there (d) air inside pushes back
26. 26.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a suction hook (d) a magnetic chess set
27. 27.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is kept the same. (a) True (b) False
28. 28.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) False (b) True
29. 29.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
30. 30.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
31. 31.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
32. 32.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is what we measure. (a) False (b) True
33. 33.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
34. 34.True or false: a suction hook works by air pressure. (a) False (b) True
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) how full the glass is (b) whether the card stays (c) the same card (d) the same glass
36. 36.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
37. 37.True or false: a drinking straw works by magnetism. (a) True (b) False
38. 38.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) water is heavier (c) little air left inside (d) it looks nicer
39. 39.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) a balloon (c) a battery cell (d) turmeric powder
40. 40.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a compass needle (c) a drinking straw (d) a suction hook

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