Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 317 · 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 works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a compass needle (d) a drinking straw
2. 2.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
3. 3.⚖️ 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) the same card (b) whether the card stays (c) how full the glass is
4. 4.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
5. 5.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a suction hook (c) a vacuum cleaner (d) a magnetic chess set
6. 6.⚖️ 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 measure it (b) we change it (c) we keep it the same
7. 7.⚖️ 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
8. 8.🔍 Which is the odd one out? (a) a drinking straw (b) a compass needle (c) a vacuum cleaner (d) a bicycle pump
9. 9.True or false: a magnetic chess set works by magnetism. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) a suction hook (b) a fridge magnet (c) a compass needle (d) a magnetic chess set
11. 11.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
12. 12.True or false: a medicine dropper works by air pressure. (a) False (b) True
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) yeast (c) a sink or a bucket (d) a stiff postcard
14. 14.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
15. 15.⚖️ 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) True (b) False
16. 16.⚖️ 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) the same glass (b) whether the card stays (c) how full the glass is (d) the way we turn it
17. 17.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
18. 18.⚖️ 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) False (b) True
19. 19.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) a drinking straw (b) a medicine dropper (c) a vacuum cleaner (d) a magnetic chess set
21. 21.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) water is hiding there (c) the cap is sticky (d) the bottle is magnetic
22. 22.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a magnet (c) a towel (d) turmeric powder
23. 23.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
24. 24.⚖️ 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) whether the card stays (b) how full the glass is (c) the same card (d) the same glass
25. 25.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
26. 26.🛟 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
27. 27.True or false: a compass needle works by magnetism. (a) False (b) True
28. 28.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) air pushing up (c) the cold water (d) glue on the card
29. 29.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) on a bed (c) over a sink or bucket (d) near a plug point
30. 30.True or false: a suction hook works by air pressure. (a) True (b) False
31. 31.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
32. 32.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a mirror (c) a glass of water (d) a sink or a bucket
33. 33.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a balloon (c) a glass of water (d) a sink or a bucket
34. 34.True or false: a compass needle works by air pressure. (a) True (b) False
35. 35.True or false: a fridge magnet works by magnetism. (a) False (b) True
36. 36.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) a sink or a bucket (d) a towel
37. 37.⚖️ 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) how full the glass is (b) whether the card stays (c) the same glass
38. 38.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
39. 39.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
40. 40.🔍 Which is the odd one out? (a) a fridge magnet (b) a bicycle pump (c) a magnetic chess set (d) a magnetic pin holder

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