Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 555 · 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: a bicycle pump works by air pressure. (a) False (b) True
2. 2.🔍 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 card flies away (d) the glass breaks
3. 3.⚖️ 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) whether the card stays (b) the way we turn it (c) how full the glass is
4. 4.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
5. 5.⚖️ 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) False (b) True
6. 6.⚖️ 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
7. 7.🔍 Which is the odd one out? (a) a drinking straw (b) a suction hook (c) a fridge magnet (d) a bicycle pump
8. 8.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) False (b) True
9. 9.True or false: a magnetic chess set works by magnetism. (a) False (b) True
10. 10.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
11. 11.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a suction hook (c) a medicine dropper (d) a magnetic chess set
12. 12.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a vacuum cleaner (c) a suction hook (d) a bicycle pump
13. 13.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
14. 14.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) air pushes it up (c) the straw is magnetic (d) juice likes plastic
15. 15.⚖️ 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 same card (b) whether the card stays (c) how full the glass is (d) the same glass
16. 16.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) yeast (c) a towel (d) a sink or a bucket
17. 17.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
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 change it (b) we keep it the same (c) we measure it
19. 19.⚖️ 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) whether the card stays (b) the same glass (c) how full the glass is
20. 20.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) a suction hook (b) a compass needle (c) a bicycle pump (d) a vacuum cleaner
22. 22.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
23. 23.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is hotter (c) it is heavier (d) it is magnetic
24. 24.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a mirror (c) a glass of water (d) a stiff postcard
25. 25.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
26. 26.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
27. 27.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a glass of water (c) a stiff postcard (d) a magnet
28. 28.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
29. 29.🥛 Which of these works by magnetism? (a) a drinking straw (b) a magnetic chess set (c) a medicine dropper (d) a suction hook
30. 30.🛟 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
31. 31.⚖️ 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) whether the card stays (b) the same card (c) the way we turn it (d) how full the glass is
32. 32.🔍 Which is the odd one out? (a) a magnetic chess set (b) a magnetic pin holder (c) a compass needle (d) a suction hook
33. 33.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
34. 34.🔍 Which is the odd one out? (a) a drinking straw (b) a medicine dropper (c) a vacuum cleaner (d) a magnetic pin holder
35. 35.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
36. 36.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
37. 37.True or false: a magnetic chess set works by air pressure. (a) True (b) False
38. 38.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a magnet (d) a sink or a bucket
39. 39.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) air inside pushes back (c) the bottle is magnetic (d) the cap is sticky
40. 40.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a balloon (c) a sink or a bucket (d) yeast

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