Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 221 · 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 is the odd one out? (a) a medicine dropper (b) a fridge magnet (c) a drinking straw (d) a suction hook
2. 2.🧺 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 glass of water (d) yeast
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 balloon (c) a glass of water (d) a towel
4. 4.⚖️ 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) False (b) True
5. 5.True or false: a drinking straw works by magnetism. (a) False (b) True
6. 6.⚖️ 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) True (b) False
7. 7.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is kept the same. (a) False (b) True
8. 8.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
9. 9.True or false: a drinking straw works by air pressure. (a) False (b) True
10. 10.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) near a plug point (c) on a bed (d) over a laptop
11. 11.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
12. 12.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to cool the glass (c) to make it rain (d) to grow plants
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a sink or a bucket (c) a towel (d) a stiff postcard
14. 14.True or false: a medicine dropper works by magnetism. (a) False (b) True
15. 15.🧺 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 mirror
16. 16.⚖️ 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
17. 17.🔍 Which is the odd one out? (a) a suction hook (b) a compass needle (c) a magnetic chess set (d) a magnetic pin holder
18. 18.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a battery cell (c) a sink or a bucket (d) a balloon
19. 19.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
20. 20.🔍 Which is the odd one out? (a) a bicycle pump (b) a compass needle (c) a fridge magnet (d) a magnetic pin holder
21. 21.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a sink or a bucket (c) a towel (d) a stiff postcard
22. 22.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
23. 23.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is hotter (d) it is magnetic
24. 24.True or false: a suction hook works by magnetism. (a) True (b) False
25. 25.🧺 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
26. 26.🥛 Which of these works by magnetism? (a) a drinking straw (b) a vacuum cleaner (c) a suction hook (d) a magnetic chess set
27. 27.🥛 Which of these works by magnetism? (a) a suction hook (b) a fridge magnet (c) a medicine dropper (d) a bicycle pump
28. 28.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) a mirror (c) a battery cell (d) a magnet
29. 29.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a glass of water (c) a sink or a bucket (d) a stiff postcard
30. 30.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
31. 31.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) the straw is magnetic (c) the straw is hot (d) juice likes plastic
32. 32.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
33. 33.⚖️ 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 change it (b) we measure it (c) we keep it the same
34. 34.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
35. 35.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
36. 36.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) the card gets wet (c) water is heavier (d) little air left inside
37. 37.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
38. 38.⚖️ 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) whether the card stays (b) the same card (c) how full the glass is
39. 39.⚖️ 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 the one thing we change. (a) False (b) True
40. 40.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a compass needle (c) a suction hook (d) a magnetic pin holder

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