Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 613 · 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.🧺 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) a magnet (d) a towel
2. 2.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic chess set (c) a suction hook (d) a magnetic pin holder
3. 3.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) yeast (c) a stiff postcard (d) a sink or a bucket
4. 4.🛟 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
5. 5.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
6. 6.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
7. 7.True or false: a bicycle pump works by air pressure. (a) False (b) True
8. 8.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a towel (c) a mirror (d) a stiff postcard
9. 9.⚖️ 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 same card (c) the way we turn it (d) how full the glass is
10. 10.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) a towel (d) turmeric powder
11. 11.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
12. 12.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
13. 13.True or false: a medicine dropper works by magnetism. (a) True (b) False
14. 14.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) sand (d) air
15. 15.⚖️ 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 measure it (b) we change it (c) we keep it the same
16. 16.🥛 Which of these works by magnetism? (a) a suction hook (b) a compass needle (c) a vacuum cleaner (d) a medicine dropper
17. 17.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
18. 18.True or false: a magnet is not needed for the card-on-a-glass trick. (a) True (b) False
19. 19.🔍 Which is the odd one out? (a) a compass needle (b) a medicine dropper (c) a fridge magnet (d) a magnetic chess set
20. 20.⚖️ 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) whether the card stays (c) the same card (d) the same glass
21. 21.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) the cold water (c) a magnet (d) glue on the card
22. 22.True or false: a compass needle works by air pressure. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) a bicycle pump (b) a vacuum cleaner (c) a magnetic pin holder (d) a suction hook
24. 24.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
25. 25.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
26. 26.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
27. 27.⚖️ 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
28. 28.🔮 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 grow plants (d) to make it rain
29. 29.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
30. 30.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
31. 31.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
32. 32.⚖️ 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 change it (c) we measure it
33. 33.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
34. 34.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) a battery cell (c) turmeric powder (d) yeast
35. 35.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic chess set (c) a fridge magnet (d) a drinking straw
36. 36.⚖️ 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
37. 37.🥛 Which of these works by air pressure? (a) a medicine dropper (b) a magnetic pin holder (c) a compass needle (d) a fridge magnet
38. 38.🔍 Which is the odd one out? (a) a medicine dropper (b) a drinking straw (c) a vacuum cleaner (d) a compass needle
39. 39.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a balloon (c) a towel (d) a stiff postcard
40. 40.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a drinking straw (c) a magnetic chess set (d) a bicycle pump

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