Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 388 · 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.🛟 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
2. 2.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a magnetic pin holder (d) a drinking straw
3. 3.⚖️ 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
4. 4.⚖️ 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) the same glass (c) whether the card stays (d) how full the glass is
5. 5.🔍 Which is the odd one out? (a) a fridge magnet (b) a vacuum cleaner (c) a bicycle pump (d) a medicine dropper
6. 6.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
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) the way we turn it (b) whether the card stays (c) how full the glass is
8. 8.⚖️ 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 glass (c) the same card (d) the way we turn it
9. 9.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a medicine dropper (c) a fridge magnet (d) a compass needle
10. 10.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
11. 11.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
12. 12.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
13. 13.⚖️ 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 keep it the same (b) we measure it (c) we change it
14. 14.True or false: a suction hook works by air pressure. (a) False (b) True
15. 15.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
16. 16.🧺 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) a balloon
17. 17.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic pin holder (c) a compass needle (d) a bicycle pump
18. 18.⚖️ 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
19. 19.⚖️ 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 change it (b) we measure it (c) we keep it the same
20. 20.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) water is heavier (c) it looks nicer (d) little air left inside
21. 21.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it will not break (c) it is heavier (d) it is magnetic
22. 22.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a mirror (b) a stiff postcard (c) a towel (d) a sink or a bucket
23. 23.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
24. 24.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
25. 25.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a bicycle pump (c) a suction hook (d) a medicine dropper
26. 26.True or false: a magnetic chess set works by air pressure. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic pin holder (c) a medicine dropper (d) a vacuum cleaner
28. 28.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) yeast (c) a glass of water (d) a stiff postcard
29. 29.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) a magnet (c) a mirror (d) turmeric powder
30. 30.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a sink or a bucket (c) a battery cell (d) a mirror
31. 31.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
32. 32.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
33. 33.True or false: a bicycle pump works by magnetism. (a) True (b) False
34. 34.⚖️ 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
35. 35.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
36. 36.True or false: a compass needle works by magnetism. (a) False (b) True
37. 37.🔮 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 cap is sticky (d) the bottle is magnetic
38. 38.⚖️ 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) True (b) False
39. 39.True or false: a medicine dropper works by air pressure. (a) True (b) False
40. 40.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False

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