Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 807 · 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.⚖️ 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) the same card (b) how full the glass is (c) whether the card stays
3. 3.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a medicine dropper (d) a magnetic chess set
4. 4.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
5. 5.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) air (c) smoke (d) sand
6. 6.⚖️ 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 keep it the same (b) we change it (c) we measure it
7. 7.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a glass of water (c) a towel (d) a stiff postcard
8. 8.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
9. 9.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
10. 10.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) on a bed (c) near a plug point (d) over a laptop
11. 11.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a vacuum cleaner (c) a compass needle (d) a magnetic chess set
12. 12.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
13. 13.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
14. 14.⚖️ 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
15. 15.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) turmeric powder (c) a stiff postcard (d) a glass of water
16. 16.⚖️ 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) False (b) True
17. 17.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
18. 18.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
19. 19.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the water turns to ice (c) the glass breaks (d) the card flies away
20. 20.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
21. 21.⚖️ 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
22. 22.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
23. 23.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
24. 24.True or false: a fridge magnet works by air pressure. (a) True (b) False
25. 25.⚖️ 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) True (b) False
26. 26.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
27. 27.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) yeast (d) a sink or a bucket
28. 28.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
29. 29.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is magnetic (c) it is heavier (d) it will not break
30. 30.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
31. 31.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) a magnet (c) glue on the card (d) air pushing up
32. 32.⚖️ 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) the same card (b) the same glass (c) how full the glass is (d) the way we turn it
33. 33.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
34. 34.True or false: a medicine dropper works by air pressure. (a) False (b) True
35. 35.🧺 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) yeast (d) a stiff postcard
36. 36.🔍 Which is the odd one out? (a) a suction hook (b) a magnetic pin holder (c) a compass needle (d) a magnetic chess set
37. 37.⚖️ 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 change it (c) we keep it the same
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 cool the glass (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: whether the card stays 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 glass of water (b) turmeric powder (c) a towel (d) a sink or a bucket

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