Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 496 · 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) a magnet (b) a battery cell (c) yeast (d) a stiff postcard
2. 2.⚖️ 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 keep it the same (b) we change it (c) we measure it
3. 3.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
4. 4.🥛 Which of these works by magnetism? (a) a suction hook (b) a vacuum cleaner (c) a drinking straw (d) a fridge magnet
5. 5.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a magnet (b) a stiff postcard (c) a glass of water (d) a towel
6. 6.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to make it rain (c) to catch any spills (d) to grow plants
7. 7.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
8. 8.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
9. 9.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a fridge magnet (d) a drinking straw
10. 10.⚖️ 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 measure it (b) we change it (c) we keep it the same
11. 11.⚖️ 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
12. 12.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a magnet (c) yeast (d) a sink or a bucket
13. 13.⚖️ 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
14. 14.🔍 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 card stays on (c) the water turns to ice (d) the glass breaks
15. 15.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) yeast (c) a towel (d) a stiff postcard
16. 16.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
17. 17.⚖️ 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
18. 18.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
19. 19.🔍 Which is the odd one out? (a) a bicycle pump (b) a compass needle (c) a magnetic chess set (d) a fridge magnet
20. 20.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a medicine dropper (c) a suction hook (d) a compass needle
21. 21.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is heavier (c) it will not break (d) it is magnetic
22. 22.True or false: a suction hook works by air pressure. (a) True (b) False
23. 23.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) yeast (c) a glass of water (d) a stiff postcard
24. 24.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a mirror (c) a glass of water (d) a battery cell
25. 25.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
26. 26.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
27. 27.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a vacuum cleaner (d) a compass needle
28. 28.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
29. 29.🧺 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 battery cell (d) a sink or a bucket
30. 30.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
31. 31.True or false: a compass needle works by air pressure. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a magnetic pin holder (c) a fridge magnet (d) a magnetic chess set
33. 33.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
34. 34.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a suction hook (c) a bicycle pump (d) a magnetic chess set
35. 35.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) turmeric powder (c) a glass of water (d) a sink or a bucket
36. 36.🔍 Which is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a medicine dropper (d) a magnetic pin holder
37. 37.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) air (d) water
38. 38.⚖️ 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) the same glass (d) how full the glass is
39. 39.⚖️ 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 kept the same. (a) False (b) True
40. 40.True or false: a vacuum cleaner works by air pressure. (a) False (b) True

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