Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 885 · 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.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
2. 2.🔍 Which is the odd one out? (a) a drinking straw (b) a suction hook (c) a medicine dropper (d) a fridge magnet
3. 3.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
4. 4.⚖️ 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 change it (b) we measure it (c) we keep it the same
5. 5.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) True (b) False
6. 6.⚖️ 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
7. 7.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
8. 8.True or false: a magnetic chess set works by magnetism. (a) True (b) False
9. 9.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
10. 10.True or false: a fridge magnet works by air pressure. (a) False (b) True
11. 11.⚖️ 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 card (c) whether the card stays (d) the same glass
12. 12.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
13. 13.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a fridge magnet (c) a magnetic pin holder (d) a magnetic chess set
14. 14.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
15. 15.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a balloon (c) a towel (d) a sink or a bucket
16. 16.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a bicycle pump (d) a magnetic chess set
17. 17.🧺 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 stiff postcard (d) a glass of water
18. 18.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) air (d) sand
20. 20.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) air inside pushes back (c) the bottle is magnetic (d) the cap is sticky
21. 21.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
22. 22.🔍 Which is the odd one out? (a) a medicine dropper (b) a magnetic chess set (c) a drinking straw (d) a bicycle pump
23. 23.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a sink or bucket (d) over a laptop
24. 24.🧺 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) turmeric powder (d) a towel
25. 25.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
26. 26.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a balloon (c) a stiff postcard (d) yeast
27. 27.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it will not break (d) it is hotter
28. 28.True or false: a compass needle 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? What do we do with “the same card”? (a) we keep it the same (b) we measure it (c) we change it
30. 30.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a medicine dropper (d) a fridge magnet
31. 31.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a sink or a bucket (d) yeast
32. 32.⚖️ 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) whether the card stays (c) the way we turn it
33. 33.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) a glass of water (d) a battery cell
34. 34.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a battery cell (c) a sink or a bucket (d) a glass of water
35. 35.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
36. 36.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) juice likes plastic (c) the straw is hot (d) the straw is magnetic
37. 37.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
38. 38.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to catch any spills (c) to make it rain (d) to grow plants
39. 39.⚖️ 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
40. 40.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False

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