Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 107 · 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.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
2. 2.True or false: a vacuum cleaner works by air pressure. (a) True (b) False
3. 3.⚖️ 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) how full the glass is (c) the same glass (d) the same card
4. 4.⚖️ 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 keep it the same (b) we change it (c) we measure it
5. 5.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) a medicine dropper (b) a vacuum cleaner (c) a bicycle pump (d) a magnetic chess set
7. 7.🔮 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 bottle is magnetic (d) the cap is sticky
8. 8.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
9. 9.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a fridge magnet (d) a medicine dropper
10. 10.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) smoke (c) water (d) air
11. 11.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) the cold water (c) air pushing up (d) glue on the card
12. 12.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a sink or a bucket (c) a magnet (d) a stiff postcard
13. 13.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic chess set (c) a compass needle (d) a magnetic pin holder
14. 14.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
15. 15.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a vacuum cleaner (c) a suction hook (d) a fridge magnet
16. 16.🥛 Which of these works by magnetism? (a) a compass needle (b) a drinking straw (c) a bicycle pump (d) a medicine dropper
17. 17.⚖️ 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
18. 18.True or false: a compass needle works by air pressure. (a) False (b) True
19. 19.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a sink or a bucket (c) a glass of water (d) a stiff postcard
20. 20.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a glass of water (c) a stiff postcard (d) a balloon
21. 21.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is hotter (c) it is heavier (d) it is magnetic
22. 22.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a medicine dropper (c) a suction hook (d) a magnetic pin holder
23. 23.True or false: a drinking straw works by air pressure. (a) True (b) False
24. 24.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a glass of water (c) turmeric powder (d) a mirror
25. 25.🔮 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 grow plants (d) to catch any spills
26. 26.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
27. 27.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) air pressure (c) sunlight (d) friction
28. 28.⚖️ 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 what we measure. (a) True (b) False
29. 29.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
30. 30.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
31. 31.🧺 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 sink or a bucket (d) a towel
32. 32.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False
33. 33.True or false: a medicine dropper works by air pressure. (a) False (b) True
34. 34.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
35. 35.True or false: a bicycle pump works by air pressure. (a) True (b) False
36. 36.⚖️ 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 way we turn it (b) the same card (c) the same glass (d) how full the glass is
37. 37.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
38. 38.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
39. 39.🥛 Which of these works by magnetism? (a) a drinking straw (b) a magnetic pin holder (c) a bicycle pump (d) a medicine dropper
40. 40.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism

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