Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 405 · 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? Which of these is what we measure? (a) the same card (b) how full the glass is (c) the way we turn it (d) whether the card stays
2. 2.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) air (c) smoke (d) sand
3. 3.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it is hotter (d) it will not break
4. 4.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
5. 5.True or false: a magnetic chess set works by air pressure. (a) False (b) True
6. 6.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
7. 7.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) air pushing up (c) a magnet (d) glue on the card
8. 8.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a sink or a bucket (c) a towel (d) a glass of water
9. 9.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
10. 10.⚖️ 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 change it (c) we keep it the same
11. 11.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
12. 12.True or false: a vacuum cleaner works by air pressure. (a) True (b) False
13. 13.🧺 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) a mirror
14. 14.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
15. 15.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a magnet (c) a sink or a bucket (d) turmeric powder
16. 16.🔍 Which is the odd one out? (a) a fridge magnet (b) a drinking straw (c) a medicine dropper (d) a suction hook
17. 17.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a glass of water (c) a balloon (d) a towel
18. 18.True or false: a bicycle pump works by magnetism. (a) False (b) True
19. 19.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
20. 20.⚖️ 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) False (b) True
21. 21.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) water is hiding there (c) air inside pushes back (d) the cap is sticky
22. 22.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a magnetic pin holder (c) a fridge magnet (d) a magnetic chess set
23. 23.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a sink or a bucket (d) a battery cell
24. 24.⚖️ 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 way we turn it (b) the same glass (c) the same card (d) how full the glass is
25. 25.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
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 glass of water (c) a magnet (d) a towel
27. 27.⚖️ 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
28. 28.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a sink or a bucket (d) yeast
29. 29.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
30. 30.🔍 Which is the odd one out? (a) a medicine dropper (b) a compass needle (c) a vacuum cleaner (d) a suction hook
31. 31.🥛 Which of these works by magnetism? (a) a suction hook (b) a medicine dropper (c) a drinking straw (d) a magnetic pin holder
32. 32.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
33. 33.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a drinking straw (c) a bicycle pump (d) a suction hook
34. 34.True or false: a fridge magnet works by magnetism. (a) False (b) True
35. 35.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
36. 36.⚖️ 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
37. 37.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
38. 38.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) near a plug point (c) over a laptop (d) over a sink or bucket
39. 39.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
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 kept the same. (a) False (b) True

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