Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 207 · 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.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) the cap is sticky (c) water is hiding there (d) air inside pushes back
2. 2.⚖️ 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
3. 3.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
4. 4.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
5. 5.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a sink or a bucket (c) a balloon (d) a mirror
6. 6.True or false: a vacuum cleaner works by air pressure. (a) False (b) True
7. 7.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
8. 8.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a sink or bucket (c) over a laptop (d) on a bed
9. 9.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a suction hook (c) a drinking straw (d) a magnetic pin holder
10. 10.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) turmeric powder (c) a towel (d) a sink or a bucket
11. 11.⚖️ 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 the one thing we change. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a magnetic chess set (d) a bicycle pump
13. 13.⚖️ 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 change it (b) we measure it (c) we keep it the same
14. 14.🔍 Which is the odd one out? (a) a suction hook (b) a medicine dropper (c) a fridge magnet (d) a drinking straw
15. 15.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is hotter (c) it will not break (d) it is magnetic
16. 16.🔍 Which is the odd one out? (a) a bicycle pump (b) a vacuum cleaner (c) a suction hook (d) a compass needle
17. 17.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
18. 18.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) air pressure (c) sunlight (d) friction
19. 19.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
20. 20.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
21. 21.True or false: a suction hook works by magnetism. (a) False (b) True
22. 22.🧺 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 mirror (d) a towel
23. 23.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
24. 24.🔍 Which is the odd one out? (a) a medicine dropper (b) a drinking straw (c) a bicycle pump (d) a magnetic chess set
25. 25.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) the straw is hot (c) juice likes plastic (d) air pushes it up
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a sink or a bucket (c) a glass of water (d) a stiff postcard
27. 27.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
28. 28.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a magnetic chess set (d) a bicycle pump
29. 29.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
30. 30.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
31. 31.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to make it rain (c) to grow plants (d) to catch any spills
32. 32.🧺 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) a towel (d) a battery cell
33. 33.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
34. 34.🥛 Which of these works by magnetism? (a) a suction hook (b) a medicine dropper (c) a drinking straw (d) a fridge magnet
35. 35.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a mirror (b) a stiff postcard (c) a glass of water (d) a towel
36. 36.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
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) the same card (c) whether the card stays
38. 38.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a towel (d) a balloon
39. 39.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a bicycle pump (c) a magnetic pin holder (d) a suction hook
40. 40.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) it looks nicer (c) water is heavier (d) little air left inside

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