Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 54 · 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? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
3. 3.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
4. 4.True or false: a compass needle works by air pressure. (a) True (b) False
5. 5.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
6. 6.🧺 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) a stiff postcard (d) a balloon
7. 7.⚖️ 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 kept the same. (a) True (b) False
8. 8.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a sink or a bucket (d) turmeric powder
9. 9.🔍 Which is the odd one out? (a) a suction hook (b) a magnetic pin holder (c) a drinking straw (d) a bicycle pump
10. 10.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
11. 11.🛟 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
12. 12.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a stiff postcard (c) a towel (d) a magnet
13. 13.True or false: a drinking straw works by magnetism. (a) False (b) True
14. 14.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a magnet (b) a glass of water (c) a stiff postcard (d) a sink or a bucket
15. 15.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
16. 16.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a compass needle (c) a fridge magnet (d) a suction hook
17. 17.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) on a bed (c) near a plug point (d) over a sink or bucket
18. 18.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
19. 19.⚖️ 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 keep it the same (b) we measure it (c) we change it
20. 20.True or false: a fridge magnet works by air pressure. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a compass needle (d) a suction hook
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 kept the same. (a) True (b) False
23. 23.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
24. 24.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a glass of water (c) a mirror (d) yeast
25. 25.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
26. 26.🥛 Which of these works by magnetism? (a) a drinking straw (b) a suction hook (c) a medicine dropper (d) a compass needle
27. 27.🔮 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 cool the glass (d) to grow plants
28. 28.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) juice likes plastic (c) the straw is hot (d) air pushes it up
29. 29.⚖️ 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 way we turn it (d) the same glass
30. 30.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
31. 31.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) sand (c) air (d) smoke
32. 32.⚖️ 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 way we turn it (c) whether the card stays (d) the same glass
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 change it (c) we keep it the same
34. 34.🥛 Which of these works by air pressure? (a) a compass needle (b) a bicycle pump (c) a magnetic pin holder (d) a magnetic chess set
35. 35.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a stiff postcard (c) a mirror (d) a balloon
36. 36.True or false: a bicycle pump works by magnetism. (a) True (b) False
37. 37.⚖️ 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 what we measure. (a) True (b) False
38. 38.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
39. 39.⚖️ 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 change it (b) we keep it the same (c) we measure it
40. 40.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism

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