Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 697 · 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.🧺 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 sink or a bucket
2. 2.⚖️ 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 measure it (c) we keep it the same
3. 3.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
4. 4.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is hotter (c) it is heavier (d) it is magnetic
5. 5.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
6. 6.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a suction hook (c) a bicycle pump (d) a drinking straw
7. 7.🔍 Which is the odd one out? (a) a suction hook (b) a compass needle (c) a magnetic chess set (d) a fridge magnet
8. 8.🥛 Which of these works by air pressure? (a) a bicycle pump (b) a compass needle (c) a magnetic pin holder (d) a magnetic chess set
9. 9.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) near a plug point (d) on a bed
10. 10.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a magnet (c) a stiff postcard (d) a balloon
11. 11.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a mirror (c) a magnet (d) a glass of water
12. 12.True or false: a magnetic chess set works by air pressure. (a) True (b) False
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) a sink or a bucket (d) a balloon
14. 14.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
15. 15.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
16. 16.🔮 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 bottle is magnetic (d) the cap is sticky
17. 17.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) turmeric powder (c) yeast (d) a towel
18. 18.⚖️ 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
19. 19.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the water turns to ice (c) the card flies away (d) the glass breaks
20. 20.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a battery cell (c) a magnet (d) a sink or a bucket
21. 21.🔍 Which is the odd one out? (a) a magnetic chess set (b) a fridge magnet (c) a magnetic pin holder (d) a medicine dropper
22. 22.⚖️ 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) how full the glass is (c) whether the card stays (d) the way we turn it
23. 23.True or false: a bicycle pump works by air pressure. (a) True (b) False
24. 24.⚖️ 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
25. 25.🧺 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 glass of water (c) a stiff postcard (d) a battery cell
26. 26.⚖️ 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
27. 27.⚖️ 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
28. 28.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a balloon (c) a sink or a bucket (d) a towel
29. 29.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
30. 30.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
31. 31.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
32. 32.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic pin holder (c) a medicine dropper (d) a bicycle pump
33. 33.True or false: a magnetic chess set works by magnetism. (a) False (b) True
34. 34.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a compass needle (c) a vacuum cleaner (d) a bicycle pump
35. 35.True or false: a suction hook works by air pressure. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) a suction hook (b) a drinking straw (c) a magnetic chess set (d) a medicine dropper
37. 37.🥛 Which of these works by air pressure? (a) a compass needle (b) a medicine dropper (c) a fridge magnet (d) a magnetic pin holder
38. 38.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a magnetic chess set (c) a medicine dropper (d) a bicycle pump
39. 39.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a drinking straw (c) a compass needle (d) a magnetic chess set
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) True (b) False

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