Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 297 · 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.⚖️ 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 measure it (b) we change it (c) we keep it the same
2. 2.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a fridge magnet (c) a magnetic pin holder (d) a magnetic chess set
4. 4.🧺 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 stiff postcard (d) a sink or a bucket
5. 5.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a glass of water (c) a magnet (d) a mirror
6. 6.True or false: a drinking straw works by magnetism. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a magnetic chess set (c) a suction hook (d) a drinking straw
8. 8.⚖️ 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
9. 9.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
10. 10.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
11. 11.🔍 Which is the odd one out? (a) a magnetic chess set (b) a magnetic pin holder (c) a suction hook (d) a compass needle
12. 12.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
13. 13.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
14. 14.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the card stays on (c) the glass breaks (d) the card flies away
15. 15.🥛 Which of these works by magnetism? (a) a compass needle (b) a suction hook (c) a bicycle pump (d) a drinking straw
16. 16.⚖️ 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 glass (c) whether the card stays
17. 17.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) False (b) True
18. 18.⚖️ 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 keep it the same (b) we measure it (c) we change it
19. 19.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) the cold water (c) glue on the card (d) air pushing up
20. 20.⚖️ 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
21. 21.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
22. 22.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a magnet (c) a stiff postcard (d) yeast
23. 23.⚖️ 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 keep it the same (c) we change it
24. 24.True or false: a bicycle pump works by magnetism. (a) True (b) False
25. 25.True or false: a magnetic chess set works by air pressure. (a) False (b) True
26. 26.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) a compass needle (b) a vacuum cleaner (c) a bicycle pump (d) a medicine dropper
28. 28.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
29. 29.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
30. 30.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a towel (c) a stiff postcard (d) a glass of water
31. 31.True or false: a vacuum cleaner works by air pressure. (a) True (b) False
32. 32.🧺 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 stiff postcard (d) turmeric powder
33. 33.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
34. 34.🥛 Which of these works by magnetism? (a) a suction hook (b) a medicine dropper (c) a magnetic chess set (d) a vacuum cleaner
35. 35.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
36. 36.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a sink or bucket (d) over a laptop
37. 37.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
38. 38.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a compass needle (c) a bicycle pump (d) a fridge magnet
39. 39.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to grow plants (c) to cool the glass (d) to make it rain
40. 40.⚖️ 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 what we measure. (a) True (b) False

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