Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 299 · 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 magnetic (b) it is hotter (c) it will not break (d) it is heavier
2. 2.⚖️ 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
3. 3.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
4. 4.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
5. 5.⚖️ 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
6. 6.🧺 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 glass of water (c) a balloon (d) a stiff postcard
7. 7.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
8. 8.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
9. 9.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic chess set (c) a suction hook (d) a bicycle pump
10. 10.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
11. 11.🧺 Which of these is not needed for the card-on-a-glass trick? (a) turmeric powder (b) a stiff postcard (c) a glass of water (d) a towel
12. 12.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
13. 13.True or false: a bicycle pump works by magnetism. (a) False (b) True
14. 14.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a mirror (c) a magnet (d) a glass of water
15. 15.True or false: a medicine dropper works by magnetism. (a) False (b) True
16. 16.🛟 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
17. 17.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
18. 18.⚖️ 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 card
19. 19.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a battery cell (b) a towel (c) a glass of water (d) a sink or a bucket
20. 20.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
21. 21.True or false: a compass needle works by magnetism. (a) False (b) True
22. 22.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
23. 23.🥛 Which of these works by magnetism? (a) a magnetic pin holder (b) a bicycle pump (c) a suction hook (d) a medicine dropper
24. 24.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a fridge magnet (d) a medicine dropper
25. 25.⚖️ 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 measure it (b) we keep it the same (c) we change it
26. 26.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) juice likes plastic (c) air pushes it up (d) the straw is hot
27. 27.⚖️ 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
28. 28.⚖️ 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 change it (b) we keep it the same (c) we measure it
29. 29.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
30. 30.⚖️ 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
31. 31.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
32. 32.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
33. 33.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) turmeric powder (c) a towel (d) a glass of water
34. 34.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a vacuum cleaner (d) a fridge magnet
35. 35.⚖️ 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 card (b) the way we turn it (c) whether the card stays (d) how full the glass is
36. 36.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
37. 37.True or false: a vacuum cleaner works by air pressure. (a) False (b) True
38. 38.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to catch any spills (c) to grow plants (d) to cool the glass
39. 39.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a magnetic chess set (d) a bicycle pump
40. 40.⚖️ 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 keep it the same (b) we change it (c) we measure it

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