Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 188 · 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.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
2. 2.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it will not break (c) it is heavier (d) it is hotter
3. 3.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) little air left inside (c) it looks nicer (d) the card gets wet
4. 4.⚖️ 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
5. 5.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
6. 6.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) on a bed (c) near a plug point (d) over a sink or bucket
7. 7.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is the one thing we change. (a) False (b) True
8. 8.🧺 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
9. 9.⚖️ 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) whether the card stays (b) the way we turn it (c) the same glass (d) how full the glass is
10. 10.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
11. 11.🥛 Which of these works by magnetism? (a) a drinking straw (b) a suction hook (c) a fridge magnet (d) a vacuum cleaner
12. 12.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a compass needle (c) a drinking straw (d) a suction hook
13. 13.⚖️ 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
14. 14.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a bicycle pump (c) a vacuum cleaner (d) a suction hook
15. 15.🥛 Which of these works by air pressure? (a) a medicine dropper (b) a magnetic chess set (c) a compass needle (d) a fridge magnet
16. 16.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
17. 17.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) a magnet (d) a stiff postcard
18. 18.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a balloon (c) a magnet (d) a towel
19. 19.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
20. 20.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
21. 21.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) yeast (c) a towel (d) a stiff postcard
22. 22.⚖️ 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 change it (c) we measure it
23. 23.🔍 Which is the odd one out? (a) a suction hook (b) a magnetic chess set (c) a fridge magnet (d) a magnetic pin holder
24. 24.🧺 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 towel (c) a mirror (d) a stiff postcard
25. 25.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
26. 26.True or false: a fridge magnet works by air pressure. (a) True (b) False
27. 27.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a bicycle pump (d) a magnetic pin holder
28. 28.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
29. 29.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) a suction hook (b) a drinking straw (c) a vacuum cleaner (d) a fridge magnet
31. 31.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
32. 32.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a towel (d) a balloon
33. 33.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) air (c) water (d) sand
34. 34.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
35. 35.True or false: a suction hook works by magnetism. (a) False (b) True
36. 36.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
37. 37.⚖️ 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
38. 38.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a balloon (c) a glass of water (d) a magnet
39. 39.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
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 way we turn it”? (a) we change it (b) we keep it the same (c) we measure it

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