Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 626 · 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.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
2. 2.⚖️ 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
3. 3.True or false: a medicine dropper works by air pressure. (a) False (b) True
4. 4.True or false: a bicycle pump works by air pressure. (a) False (b) True
5. 5.True or false: a suction hook works by magnetism. (a) True (b) False
6. 6.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
7. 7.True or false: a bicycle pump works by magnetism. (a) True (b) False
8. 8.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a suction hook (c) a compass needle (d) a drinking straw
9. 9.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
10. 10.🧺 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 glass of water (c) a stiff postcard (d) yeast
11. 11.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) near a plug point (c) over a sink or bucket (d) over a laptop
12. 12.🥛 Which of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a vacuum cleaner (d) a magnetic pin holder
13. 13.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
14. 14.🔮 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
15. 15.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) turmeric powder (c) a battery cell (d) a stiff postcard
16. 16.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it will not break (c) it is heavier (d) it is hotter
17. 17.⚖️ 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 the one thing we change. (a) True (b) False
18. 18.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
19. 19.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the card stays on (c) the glass breaks (d) the water turns to ice
20. 20.True or false: a compass needle works by air pressure. (a) False (b) True
21. 21.🥛 Which of these works by magnetism? (a) a suction hook (b) a fridge magnet (c) a bicycle pump (d) a drinking straw
22. 22.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) air (d) sand
23. 23.⚖️ 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) True (b) False
24. 24.🧺 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 balloon (d) a glass of water
25. 25.⚖️ 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
26. 26.⚖️ 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) how full the glass is (b) the same glass (c) the way we turn it (d) whether the card stays
27. 27.⚖️ 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 way we turn it (b) whether the card stays (c) how full the glass is (d) the same glass
28. 28.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
29. 29.⚖️ 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
30. 30.🔍 Which is the odd one out? (a) a medicine dropper (b) a magnetic pin holder (c) a bicycle pump (d) a vacuum cleaner
31. 31.⚖️ 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) False (b) True
32. 32.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a glass of water (c) yeast (d) turmeric powder
33. 33.True or false: a magnetic chess set works by magnetism. (a) False (b) True
34. 34.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
35. 35.⚖️ 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
36. 36.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
37. 37.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) the straw is hot (c) air pushes it up (d) juice likes plastic
38. 38.🔍 Which is the odd one out? (a) a magnetic chess set (b) a medicine dropper (c) a compass needle (d) a fridge magnet
39. 39.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) the cold water (c) air pushing up (d) glue on the card
40. 40.⚖️ 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 kept the same. (a) False (b) True

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