Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 656 · 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 a magnet for the card-on-a-glass trick? (a) needed (b) not needed
2. 2.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
3. 3.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) near a plug point (d) over a sink or bucket
4. 4.🛟 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
5. 5.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
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 what we measure. (a) True (b) False
7. 7.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) yeast (c) a balloon (d) a towel
8. 8.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a towel (d) a battery cell
9. 9.True or false: a compass needle works by air pressure. (a) False (b) True
10. 10.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) the card gets wet (c) little air left inside (d) water is heavier
11. 11.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a medicine dropper (c) a drinking straw (d) a vacuum cleaner
12. 12.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a balloon (c) turmeric powder (d) a glass of water
13. 13.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
14. 14.True or false: a bicycle pump works by air pressure. (a) False (b) True
15. 15.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
16. 16.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a towel (d) a balloon
17. 17.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
18. 18.True or false: a bicycle pump works by magnetism. (a) False (b) True
19. 19.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a stiff postcard (c) a sink or a bucket (d) a glass of water
20. 20.🥛 Which of these works by magnetism? (a) a suction hook (b) a bicycle pump (c) a magnetic pin holder (d) a vacuum cleaner
21. 21.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to make it rain (c) to cool the glass (d) to catch any spills
22. 22.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) True (b) False
23. 23.⚖️ 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
24. 24.⚖️ 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 the one thing we change. (a) False (b) True
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 way we turn it”? (a) we change it (b) we keep it the same (c) we measure it
26. 26.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
27. 27.⚖️ 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) False (b) True
28. 28.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a magnetic pin holder (c) a suction hook (d) a fridge magnet
29. 29.🧺 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) a battery cell (d) a sink or a bucket
30. 30.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
31. 31.⚖️ 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 keep it the same (c) we measure it
32. 32.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a towel (c) a sink or a bucket (d) a stiff postcard
33. 33.🔍 Which is the odd one out? (a) a medicine dropper (b) a bicycle pump (c) a magnetic chess set (d) a drinking straw
34. 34.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) water (c) air (d) smoke
35. 35.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
36. 36.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
37. 37.⚖️ 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 kept the same. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) a suction hook (b) a vacuum cleaner (c) a fridge magnet (d) a drinking straw
39. 39.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a mirror (c) yeast (d) a stiff postcard
40. 40.🔍 Which is the odd one out? (a) a compass needle (b) a vacuum cleaner (c) a drinking straw (d) a medicine dropper

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