Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 763 · 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.True or false: a vacuum cleaner works by air pressure. (a) False (b) True
2. 2.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) friction (c) magnetism (d) sunlight
3. 3.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is hotter (c) it is magnetic (d) it will not break
4. 4.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
5. 5.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
6. 6.True or false: a medicine dropper works by magnetism. (a) False (b) True
7. 7.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
8. 8.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) on a bed (c) near a plug point (d) over a sink or bucket
9. 9.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a compass needle (d) a medicine dropper
11. 11.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
12. 12.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card flies away (c) the card stays on (d) the water turns to ice
13. 13.⚖️ 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 measure it (b) we keep it the same (c) we change it
14. 14.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
15. 15.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
16. 16.⚖️ 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
17. 17.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
18. 18.⚖️ 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
19. 19.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
20. 20.⚖️ 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) the same glass (c) the same card (d) whether the card stays
21. 21.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
22. 22.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) yeast (c) a towel (d) a glass of water
23. 23.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
24. 24.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a suction hook (c) a magnetic pin holder (d) a drinking straw
25. 25.True or false: a bicycle pump works by magnetism. (a) False (b) True
26. 26.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
27. 27.🧺 Which of these is not needed for the card-on-a-glass trick? (a) turmeric powder (b) a glass of water (c) a towel (d) a stiff postcard
28. 28.🥛 Which of these works by magnetism? (a) a suction hook (b) a bicycle pump (c) a medicine dropper (d) a fridge magnet
29. 29.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a magnetic chess set (d) a drinking straw
30. 30.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
31. 31.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) little air left inside (c) it looks nicer (d) the card gets wet
32. 32.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a suction hook (d) a magnetic pin holder
33. 33.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a balloon (c) a glass of water (d) a magnet
34. 34.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a stiff postcard (c) a glass of water (d) a towel
35. 35.True or false: a fridge magnet works by air pressure. (a) False (b) True
36. 36.⚖️ 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
37. 37.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a suction hook (c) a magnetic pin holder (d) a magnetic chess set
38. 38.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) juice likes plastic (c) the straw is magnetic (d) air pushes it up
39. 39.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) a battery cell (d) a stiff postcard
40. 40.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the cap is sticky (c) air inside pushes back (d) the bottle is magnetic

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