Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 121 · 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.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a compass needle (d) a drinking straw
2. 2.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
3. 3.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic pin holder (c) a compass needle (d) a drinking straw
4. 4.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
5. 5.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a sink or a bucket (d) a battery cell
6. 6.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) a fridge magnet (b) a vacuum cleaner (c) a bicycle pump (d) a suction hook
8. 8.⚖️ 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 keep it the same (b) we measure it (c) we change it
9. 9.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it is heavier (d) it will not break
10. 10.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
11. 11.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a towel (c) a stiff postcard (d) a glass of water
12. 12.⚖️ 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) False (b) True
13. 13.🔮 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) water is hiding there (d) the cap is sticky
14. 14.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
15. 15.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
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 the one thing we change. (a) False (b) True
17. 17.⚖️ 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) whether the card stays (b) the way we turn it (c) how full the glass is (d) the same card
18. 18.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a glass of water (c) turmeric powder (d) a magnet
19. 19.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a magnet (c) a sink or a bucket (d) a glass of water
20. 20.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic pin holder (c) a vacuum cleaner (d) a magnetic chess set
21. 21.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
22. 22.True or false: a bicycle pump works by magnetism. (a) False (b) True
23. 23.🧺 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) turmeric powder (d) a sink or a bucket
24. 24.⚖️ 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
25. 25.⚖️ 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) how full the glass is (b) the same glass (c) the same card (d) whether the card stays
26. 26.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
27. 27.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
28. 28.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is what we measure. (a) False (b) True
29. 29.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
30. 30.🥤 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
31. 31.⚖️ 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 what we measure. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) a suction hook (b) a compass needle (c) a magnetic chess set (d) a fridge magnet
33. 33.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) near a plug point (c) on a bed (d) over a laptop
34. 34.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is the one thing we change. (a) False (b) True
35. 35.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) smoke (c) sand (d) water
36. 36.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a magnet (c) a stiff postcard (d) a towel
37. 37.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a battery cell (c) a stiff postcard (d) a sink or a bucket
38. 38.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a bicycle pump (c) a fridge magnet (d) a compass needle
39. 39.🥛 Which of these works by magnetism? (a) a suction hook (b) a magnetic pin holder (c) a medicine dropper (d) a drinking straw
40. 40.🔮 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

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