Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 286 · 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.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is heavier (c) it is magnetic (d) it is hotter
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 glass of water for the card-on-a-glass trick? (a) needed (b) not needed
4. 4.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a bicycle pump (d) a magnetic chess set
5. 5.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
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.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
8. 8.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a bicycle pump (c) a drinking straw (d) a compass needle
9. 9.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
10. 10.📘 Air presses on everything around us. What is this push called? (a) friction (b) air pressure (c) sunlight (d) magnetism
11. 11.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a glass of water (c) a sink or a bucket (d) a battery cell
12. 12.⚖️ 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 measure it (b) we change it (c) we keep it the same
13. 13.🥛 Which of these works by magnetism? (a) a drinking straw (b) a magnetic chess set (c) a medicine dropper (d) a suction hook
14. 14.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) True (b) False
15. 15.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a glass of water (c) a stiff postcard (d) a towel
16. 16.True or false: a medicine dropper works by air pressure. (a) True (b) False
17. 17.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a stiff postcard (c) turmeric powder (d) a mirror
18. 18.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic pin holder (c) a magnetic chess set (d) a compass needle
19. 19.🔍 Which is the odd one out? (a) a compass needle (b) a bicycle pump (c) a suction hook (d) a drinking straw
20. 20.True or false: a magnetic chess set works by magnetism. (a) False (b) True
21. 21.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) over a laptop (c) on a bed (d) near a plug point
22. 22.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
23. 23.🔍 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 glass breaks (c) the card flies away (d) the water turns to ice
24. 24.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a glass of water (c) a towel (d) a stiff postcard
25. 25.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a compass needle (c) a drinking straw (d) a magnetic chess set
26. 26.🔮 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 cool the glass (d) to grow plants
27. 27.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
28. 28.🔍 Which is the odd one out? (a) a suction hook (b) a vacuum cleaner (c) a fridge magnet (d) a bicycle pump
29. 29.⚖️ 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) the way we turn it (d) the same card
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) the same glass (b) how full the glass is (c) whether the card stays
31. 31.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
32. 32.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the bottle is magnetic (c) water is hiding there (d) the cap is sticky
33. 33.True or false: a compass needle works by magnetism. (a) False (b) True
34. 34.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
35. 35.🔍 Which is the odd one out? (a) a drinking straw (b) a medicine dropper (c) a magnetic chess set (d) a suction hook
36. 36.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
37. 37.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a medicine dropper (c) a drinking straw (d) a magnetic pin holder
38. 38.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a sink or a bucket (d) turmeric powder
39. 39.⚖️ 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 keep it the same (b) we measure it (c) we change it
40. 40.True or false: a fridge magnet works by air pressure. (a) True (b) False

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