Air Pressure Experiment Worksheet

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

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