Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 582 · 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 kept the same? (a) the same glass (b) how full the glass is (c) whether the card stays
2. 2.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a drinking straw (c) a vacuum cleaner (d) a suction hook
3. 3.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) turmeric powder (c) a magnet (d) a towel
4. 4.🔍 Which is the odd one out? (a) a magnetic chess set (b) a drinking straw (c) a suction hook (d) a vacuum cleaner
5. 5.🔍 Which is the odd one out? (a) a suction hook (b) a compass needle (c) a bicycle pump (d) a vacuum cleaner
6. 6.🧺 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) a magnet
7. 7.⚖️ 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
8. 8.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a glass of water (c) a balloon (d) turmeric powder
9. 9.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a battery cell (b) a glass of water (c) a sink or a bucket (d) a stiff postcard
10. 10.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
11. 11.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a vacuum cleaner (d) a compass needle
12. 12.⚖️ 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
13. 13.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
14. 14.⚖️ 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
15. 15.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a drinking straw (c) a bicycle pump (d) a medicine dropper
16. 16.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
17. 17.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
18. 18.🥛 Which of these works by air pressure? (a) a drinking straw (b) a fridge magnet (c) a compass needle (d) a magnetic pin holder
19. 19.⚖️ 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
20. 20.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
21. 21.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
22. 22.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) air (c) sand (d) water
23. 23.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) water is hiding there (c) the cap is sticky (d) the bottle is magnetic
24. 24.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a bicycle pump (c) a fridge magnet (d) a magnetic chess set
25. 25.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it will not break (d) it is hotter
26. 26.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
27. 27.⚖️ 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
28. 28.⚖️ 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 card (c) how full the glass is (d) whether the card stays
29. 29.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
30. 30.True or false: a magnetic chess set works by magnetism. (a) False (b) True
31. 31.🥛 Which of these works by magnetism? (a) a magnetic pin holder (b) a suction hook (c) a medicine dropper (d) a drinking straw
32. 32.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a magnetic chess set (c) a compass needle (d) a vacuum cleaner
33. 33.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
34. 34.🥛 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
35. 35.True or false: a medicine dropper works by magnetism. (a) True (b) False
36. 36.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) on a bed (d) over a sink or bucket
37. 37.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
38. 38.🔍 Which is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a medicine dropper (d) a magnetic pin holder
39. 39.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
40. 40.🧺 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) a mirror (d) a sink or a bucket

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