Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 321 · 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.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a mirror (c) a balloon (d) a sink or a bucket
2. 2.🧺 Which of these is not needed for the card-on-a-glass trick? (a) yeast (b) a stiff postcard (c) a towel (d) a glass of water
3. 3.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
4. 4.True or false: a medicine dropper works by magnetism. (a) False (b) True
5. 5.🥛 Which of these works by air pressure? (a) a suction hook (b) a magnetic pin holder (c) a fridge magnet (d) a compass needle
6. 6.⚖️ 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 glass (b) the same card (c) whether the card stays (d) how full the glass is
7. 7.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) water is heavier (c) the card gets wet (d) little air left inside
8. 8.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a glass of water (c) a towel (d) a sink or a bucket
9. 9.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a glass of water (c) a magnet (d) yeast
10. 10.⚖️ 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) how full the glass is (c) the same card
11. 11.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic pin holder (c) a fridge magnet (d) a compass needle
12. 12.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
13. 13.🥛 Which of these works by air pressure? (a) a compass needle (b) a drinking straw (c) a magnetic chess set (d) a fridge magnet
14. 14.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a fridge magnet (d) a suction hook
15. 15.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a magnetic pin holder (d) a bicycle pump
16. 16.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a mirror (c) a sink or a bucket (d) a glass of water
17. 17.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
18. 18.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a sink or a bucket (c) a stiff postcard (d) a towel
19. 19.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a bicycle pump (c) a suction hook (d) a magnetic chess set
20. 20.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is heavier (c) it is magnetic (d) it is hotter
21. 21.True or false: a medicine dropper works by air pressure. (a) False (b) True
22. 22.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
23. 23.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) over a laptop (c) near a plug point (d) on a bed
24. 24.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the water turns to ice (c) the card flies away (d) the glass breaks
25. 25.🧺 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 towel (d) a magnet
26. 26.🔍 Which is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a fridge magnet (d) a suction hook
27. 27.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
28. 28.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
29. 29.True or false: a vacuum cleaner works by air pressure. (a) False (b) True
30. 30.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a battery cell (c) a glass of water (d) a towel
31. 31.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
32. 32.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic chess set (c) a fridge magnet (d) a vacuum cleaner
33. 33.True or false: a fridge magnet works by air pressure. (a) True (b) False
34. 34.🥛 Which of these works by magnetism? (a) a drinking straw (b) a vacuum cleaner (c) a suction hook (d) a magnetic pin holder
35. 35.🔍 Which is the odd one out? (a) a suction hook (b) a compass needle (c) a vacuum cleaner (d) a bicycle pump
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 keep it the same (c) we measure it
37. 37.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
38. 38.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is kept the same. (a) True (b) False
39. 39.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) air (d) sand
40. 40.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure

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