Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 381 · 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: whether the card stays is what we measure. (a) False (b) True
2. 2.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) turmeric powder (c) a stiff postcard (d) a glass of water
3. 3.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
4. 4.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
5. 5.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a sink or bucket (d) over a laptop
6. 6.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) yeast (c) a balloon (d) turmeric powder
7. 7.⚖️ 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) whether the card stays (b) how full the glass is (c) the same card (d) the same glass
8. 8.True or false: a bicycle pump works by air pressure. (a) False (b) True
9. 9.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
10. 10.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
11. 11.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) a balloon (d) a glass of water
12. 12.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) yeast (d) a stiff postcard
14. 14.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a glass of water (c) a towel (d) a sink or a bucket
15. 15.🔍 Which is the odd one out? (a) a suction hook (b) a vacuum cleaner (c) a drinking straw (d) a fridge magnet
16. 16.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
17. 17.🥛 Which of these works by magnetism? (a) a drinking straw (b) a vacuum cleaner (c) a compass needle (d) a bicycle pump
18. 18.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
19. 19.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
20. 20.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) water is heavier (c) the card gets wet (d) it looks nicer
21. 21.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a bicycle pump (c) a vacuum cleaner (d) a medicine dropper
22. 22.⚖️ 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
23. 23.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is magnetic (c) it is hotter (d) it will not break
24. 24.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
25. 25.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a vacuum cleaner (c) a compass needle (d) a magnetic chess set
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) a glass of water (d) a battery cell
27. 27.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
28. 28.🔮 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
29. 29.True or false: a drinking straw works by magnetism. (a) False (b) True
30. 30.True or false: a compass needle works by magnetism. (a) False (b) True
31. 31.⚖️ 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 way we turn it (b) the same card (c) whether the card stays (d) how full the glass is
32. 32.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a magnetic pin holder (c) a bicycle pump (d) a suction hook
33. 33.⚖️ 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
34. 34.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
35. 35.⚖️ 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 keep it the same (b) we measure it (c) we change it
36. 36.⚖️ 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 keep it the same (b) we measure it (c) we change it
37. 37.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) juice likes plastic (c) the straw is magnetic (d) the straw is hot
38. 38.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a mirror (c) a battery cell (d) a stiff postcard
39. 39.🔍 Which is the odd one out? (a) a drinking straw (b) a compass needle (c) a fridge magnet (d) a magnetic chess set
40. 40.🧺 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 towel (d) a mirror

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