Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 339 · 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.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a sink or a bucket (c) a magnet (d) a battery cell
2. 2.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) a stiff postcard (d) yeast
3. 3.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
4. 4.⚖️ 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
5. 5.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a drinking straw (d) a compass needle
6. 6.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
7. 7.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
8. 8.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a drinking straw (c) a magnetic chess set (d) a vacuum cleaner
9. 9.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
10. 10.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
11. 11.⚖️ 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
12. 12.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) a balloon (c) a magnet (d) turmeric powder
13. 13.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
14. 14.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
15. 15.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
16. 16.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) a balloon (d) a sink or a bucket
17. 17.⚖️ 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 glass
18. 18.🧺 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 mirror (d) a glass of water
19. 19.🔮 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
20. 20.⚖️ 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 measure it (b) we keep it the same (c) we change it
21. 21.🥛 Which of these works by magnetism? (a) a suction hook (b) a compass needle (c) a drinking straw (d) a medicine dropper
22. 22.⚖️ 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) how full the glass is (b) the way we turn it (c) whether the card stays
23. 23.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a magnet (c) yeast (d) a mirror
24. 24.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) smoke (c) sand (d) air
25. 25.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card flies away (c) the card stays on (d) the water turns to ice
26. 26.🧺 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 battery cell (c) a glass of water (d) a towel
27. 27.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
28. 28.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
29. 29.🔍 Which is the odd one out? (a) a bicycle pump (b) a vacuum cleaner (c) a medicine dropper (d) a magnetic pin holder
30. 30.⚖️ 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 glass (b) whether the card stays (c) how full the glass is (d) the same card
31. 31.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
32. 32.True or false: a medicine dropper works by air pressure. (a) True (b) False
33. 33.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
34. 34.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a mirror (c) a glass of water (d) a sink or a bucket
35. 35.🛟 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
36. 36.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a drinking straw (c) a fridge magnet (d) a medicine dropper
37. 37.🔍 Which is the odd one out? (a) a magnetic chess set (b) a vacuum cleaner (c) a compass needle (d) a fridge magnet
38. 38.⚖️ 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
39. 39.⚖️ 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) how full the glass is (b) the same card (c) whether the card stays
40. 40.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed

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