Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 410 · 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.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
2. 2.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
3. 3.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) water is hiding there (c) the bottle is magnetic (d) air inside pushes back
4. 4.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a glass of water (d) a battery cell
5. 5.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) air (c) smoke (d) sand
6. 6.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is magnetic (d) it is hotter
7. 7.⚖️ 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
8. 8.🔮 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 make it rain (d) to grow plants
9. 9.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) turmeric powder (d) a stiff postcard
10. 10.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a glass of water (c) a towel (d) a sink or a bucket
11. 11.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) over a laptop (c) near a plug point (d) on a bed
12. 12.⚖️ 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) how full the glass is (c) the way we turn it (d) whether the card stays
13. 13.⚖️ 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) True (b) False
14. 14.True or false: a suction hook works by air pressure. (a) True (b) False
15. 15.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a magnetic chess set (d) a drinking straw
16. 16.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
17. 17.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a balloon (c) a battery cell (d) a towel
18. 18.True or false: a compass needle works by magnetism. (a) True (b) False
19. 19.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
20. 20.⚖️ 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
21. 21.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
22. 22.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) air pushing up (c) glue on the card (d) the cold water
23. 23.🔍 Which is the odd one out? (a) a fridge magnet (b) a vacuum cleaner (c) a bicycle pump (d) a suction hook
24. 24.🔍 Which is the odd one out? (a) a suction hook (b) a magnetic pin holder (c) a vacuum cleaner (d) a medicine dropper
25. 25.True or false: a bicycle pump works by magnetism. (a) True (b) False
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) yeast (c) a towel (d) a glass of water
27. 27.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) turmeric powder (c) a sink or a bucket (d) a magnet
28. 28.⚖️ 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) whether the card stays (c) the way we turn it
29. 29.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is kept the same. (a) True (b) False
30. 30.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a bicycle pump (c) a fridge magnet (d) a suction hook
31. 31.⚖️ 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
32. 32.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a bicycle pump (d) a compass needle
33. 33.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
34. 34.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
35. 35.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a towel (c) a glass of water (d) a sink or a bucket
36. 36.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a fridge magnet (c) a magnetic chess set (d) a compass needle
37. 37.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a suction hook (d) a magnetic pin holder
38. 38.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
39. 39.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) turmeric powder (c) yeast (d) a stiff postcard
40. 40.⚖️ 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 measure it (b) we change it (c) we keep it the same

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