Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 621 · 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 stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
2. 2.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a stiff postcard (c) a towel (d) a glass of water
3. 3.⚖️ 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 what we measure. (a) False (b) True
4. 4.🧺 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 mirror (d) a towel
5. 5.True or false: a medicine dropper works by magnetism. (a) False (b) True
6. 6.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) glue on the card (c) the cold water (d) air pushing up
7. 7.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) a battery cell (c) yeast (d) a mirror
8. 8.🔍 Which is the odd one out? (a) a bicycle pump (b) a compass needle (c) a fridge magnet (d) a magnetic pin holder
9. 9.🥛 Which of these works by air pressure? (a) a drinking straw (b) a fridge magnet (c) a compass needle (d) a magnetic pin holder
10. 10.🛟 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
11. 11.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a vacuum cleaner (c) a suction hook (d) a drinking straw
12. 12.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the water turns to ice (c) the glass breaks (d) the card stays on
13. 13.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a balloon (c) a mirror (d) a magnet
14. 14.⚖️ 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
15. 15.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a mirror (c) a magnet (d) a stiff postcard
16. 16.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
17. 17.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
18. 18.⚖️ 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
19. 19.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a mirror (d) a sink or a bucket
20. 20.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a medicine dropper (d) a compass needle
21. 21.⚖️ 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 change it (b) we measure it (c) we keep it the same
22. 22.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) turmeric powder (d) a glass of water
23. 23.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
24. 24.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
25. 25.🥛 Which of these works by magnetism? (a) a suction hook (b) a vacuum cleaner (c) a drinking straw (d) a compass needle
26. 26.🥛 Which of these works by magnetism? (a) a suction hook (b) a bicycle pump (c) a magnetic pin holder (d) a vacuum cleaner
27. 27.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a suction hook (c) a drinking straw (d) a magnetic chess set
28. 28.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) it looks nicer (c) water is heavier (d) the card gets wet
29. 29.⚖️ 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 keep it the same (b) we measure it (c) we change it
30. 30.True or false: a medicine dropper works by air pressure. (a) False (b) True
31. 31.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
32. 32.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
33. 33.True or false: a vacuum cleaner works by air pressure. (a) False (b) True
34. 34.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
35. 35.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to cool the glass (c) to grow plants (d) to catch any spills
36. 36.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a suction hook (c) a magnetic chess set (d) a compass needle
37. 37.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
38. 38.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic chess set (c) a magnetic pin holder (d) a bicycle pump
39. 39.True or false: a fridge magnet works by air pressure. (a) True (b) False
40. 40.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a magnet (d) a sink or a bucket

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