Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 433 · 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? Which of these is the one thing we change? (a) the same glass (b) the way we turn it (c) whether the card stays (d) how full the glass is
2. 2.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a magnet (b) a stiff postcard (c) a glass of water (d) a towel
3. 3.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
4. 4.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
5. 5.True or false: a drinking straw works by magnetism. (a) True (b) False
6. 6.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a sink or a bucket (c) a stiff postcard (d) a towel
7. 7.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the card stays on (c) the card flies away (d) the glass breaks
8. 8.🥛 Which of these works by air pressure? (a) a compass needle (b) a medicine dropper (c) a magnetic chess set (d) a magnetic pin holder
9. 9.True or false: a compass needle works by air pressure. (a) True (b) False
10. 10.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
11. 11.⚖️ 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 change it (b) we keep it the same (c) we measure it
12. 12.⚖️ 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
13. 13.True or false: a suction hook works by magnetism. (a) True (b) False
14. 14.🧺 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
15. 15.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to make it rain (c) to grow plants (d) to cool the glass
16. 16.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
17. 17.🛟 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
18. 18.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a compass needle (d) a drinking straw
19. 19.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a magnet (d) a glass of water
20. 20.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
21. 21.🔍 Which is the odd one out? (a) a bicycle pump (b) a fridge magnet (c) a compass needle (d) a magnetic pin holder
22. 22.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a magnetic chess set (c) a compass needle (d) a drinking straw
23. 23.⚖️ 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
24. 24.True or false: a bicycle pump works by magnetism. (a) True (b) False
25. 25.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
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 glass”? (a) we change it (b) we keep it the same (c) we measure it
27. 27.⚖️ 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) how full the glass is (c) whether the card stays
28. 28.🥛 Which of these works by magnetism? (a) a suction hook (b) a medicine dropper (c) a vacuum cleaner (d) a magnetic pin holder
29. 29.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
30. 30.⚖️ 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
31. 31.🥛 Which of these works by magnetism? (a) a compass needle (b) a drinking straw (c) a vacuum cleaner (d) a suction hook
32. 32.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
33. 33.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
34. 34.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a balloon (c) a towel (d) a sink or a bucket
35. 35.⚖️ 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 the one thing we change. (a) True (b) False
36. 36.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) air inside pushes back (c) the cap is sticky (d) water is hiding there
37. 37.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
38. 38.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a balloon (c) a sink or a bucket (d) a battery cell
39. 39.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) over a sink or bucket (d) on a bed
40. 40.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism

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