Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 300 · 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 is hotter (b) it will not break (c) it is heavier (d) it is magnetic
2. 2.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
3. 3.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) over a sink or bucket (d) on a bed
4. 4.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
5. 5.🥛 Which of these works by air pressure? (a) a bicycle pump (b) a compass needle (c) a magnetic chess set (d) a fridge magnet
6. 6.🔮 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
7. 7.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
8. 8.⚖️ 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) False (b) True
9. 9.⚖️ 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 measure it (b) we keep it the same (c) we change it
10. 10.🥛 Which of these works by air pressure? (a) a suction hook (b) a fridge magnet (c) a compass needle (d) a magnetic chess set
11. 11.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
12. 12.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a magnetic chess set (d) a drinking straw
13. 13.⚖️ 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) whether the card stays (b) how full the glass is (c) the same glass
14. 14.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
15. 15.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) little air left inside (c) the card gets wet (d) water is heavier
16. 16.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a vacuum cleaner (c) a compass needle (d) a magnetic pin holder
17. 17.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) air pressure (c) sunlight (d) friction
18. 18.⚖️ 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 same glass (b) whether the card stays (c) the same card (d) the way we turn it
19. 19.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a mirror (c) a glass of water (d) a stiff postcard
20. 20.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a battery cell (c) a magnet (d) a sink or a bucket
21. 21.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a towel (c) a sink or a bucket (d) a stiff postcard
22. 22.🥛 Which of these works by magnetism? (a) a drinking straw (b) a suction hook (c) a bicycle pump (d) a magnetic chess set
23. 23.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
24. 24.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
25. 25.🔍 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
26. 26.⚖️ 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) the way we turn it (c) whether the card stays
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 same glass”? (a) we change it (b) we measure it (c) we keep it the same
28. 28.True or false: a fridge magnet works by air pressure. (a) True (b) False
29. 29.⚖️ 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
30. 30.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
31. 31.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
32. 32.True or false: a medicine dropper works by magnetism. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) a bicycle pump (b) a drinking straw (c) a suction hook (d) a magnetic pin holder
34. 34.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a compass needle (d) a vacuum cleaner
35. 35.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
36. 36.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) turmeric powder (c) a balloon (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 the one thing we change? (a) how full the glass is (b) whether the card stays (c) the way we turn it (d) the same glass
38. 38.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a compass needle (c) a suction hook (d) a drinking straw
39. 39.🔍 Which is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a suction hook (d) a fridge magnet
40. 40.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) yeast (c) a magnet (d) a stiff postcard

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