Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 268 · 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: how full the glass is is kept the same. (a) False (b) True
2. 2.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a drinking straw (d) a compass needle
3. 3.True or false: a medicine dropper works by magnetism. (a) False (b) True
4. 4.🧺 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) a balloon (d) a sink or a bucket
5. 5.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
6. 6.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a magnetic chess set (c) a suction hook (d) a medicine dropper
7. 7.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
8. 8.⚖️ 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) how full the glass is (d) whether the card stays
9. 9.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a sink or bucket (c) over a laptop (d) on a bed
10. 10.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) water is hiding there (c) the bottle is magnetic (d) air inside pushes back
11. 11.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a suction hook (d) a magnetic chess set
12. 12.🔍 Which is the odd one out? (a) a fridge magnet (b) a bicycle pump (c) a magnetic chess set (d) a magnetic pin holder
13. 13.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic chess set (c) a fridge magnet (d) a bicycle pump
14. 14.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
15. 15.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
16. 16.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
17. 17.🧺 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) turmeric powder (d) a glass of water
18. 18.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) a balloon (c) yeast (d) a battery cell
20. 20.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
21. 21.True or false: a drinking straw works by magnetism. (a) True (b) False
22. 22.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
23. 23.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a compass needle (c) a vacuum cleaner (d) a fridge magnet
24. 24.🧺 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 magnet (d) a stiff postcard
25. 25.True or false: a bicycle pump works by magnetism. (a) False (b) True
26. 26.True or false: a fridge magnet works by magnetism. (a) False (b) True
27. 27.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
28. 28.True or false: a magnetic chess set works by air pressure. (a) True (b) False
29. 29.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
30. 30.⚖️ 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
31. 31.⚖️ 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
32. 32.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
33. 33.🔍 Which is the odd one out? (a) a fridge magnet (b) a bicycle pump (c) a medicine dropper (d) a suction hook
34. 34.🔍 Which is the odd one out? (a) a magnetic chess set (b) a suction hook (c) a bicycle pump (d) a medicine dropper
35. 35.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
36. 36.⚖️ 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) 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: the same glass is what we measure. (a) True (b) False
38. 38.🔮 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 grow plants (d) to make it rain
39. 39.True or false: a drinking straw works by air pressure. (a) False (b) True
40. 40.⚖️ 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

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