Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 64 · 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 suction hook works by magnetism. (a) True (b) False
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 same card”? (a) we keep it the same (b) we measure it (c) we change it
3. 3.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
4. 4.🔍 Which is the odd one out? (a) a drinking straw (b) a vacuum cleaner (c) a fridge magnet (d) a bicycle pump
5. 5.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a medicine dropper (d) a magnetic chess set
6. 6.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
7. 7.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
8. 8.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
9. 9.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is magnetic (c) air pushes it up (d) the straw is hot
10. 10.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a magnetic pin holder (c) a drinking straw (d) a bicycle pump
11. 11.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is magnetic (c) it will not break (d) it is heavier
12. 12.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a bicycle pump (c) a magnetic pin holder (d) a drinking straw
13. 13.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the glass breaks (c) the card stays on (d) the card flies away
14. 14.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) a glass of water (d) yeast
15. 15.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a battery cell (c) a glass of water (d) yeast
16. 16.⚖️ 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 keep it the same (c) we change it
17. 17.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) magnetism (c) friction (d) air pressure
18. 18.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) over a sink or bucket (d) on a bed
19. 19.🧺 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 mirror (c) a stiff postcard (d) a glass of water
20. 20.True or false: a vacuum cleaner works by air pressure. (a) True (b) False
21. 21.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
22. 22.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) water is hiding there (c) the cap is sticky (d) air inside pushes back
23. 23.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
24. 24.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
25. 25.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
26. 26.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) True (b) False
27. 27.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a battery cell (c) a mirror (d) a sink or a bucket
28. 28.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
29. 29.True or false: a bicycle pump works by magnetism. (a) False (b) True
30. 30.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) air pushing up (c) a magnet (d) the cold water
31. 31.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) a stiff postcard (d) a sink or a bucket
32. 32.🥛 Which of these works by air pressure? (a) a suction hook (b) a magnetic pin holder (c) a magnetic chess set (d) a compass needle
33. 33.⚖️ 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) the way we turn it (b) the same glass (c) whether the card stays (d) how full the glass is
34. 34.⚖️ 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) False (b) True
35. 35.True or false: a compass needle works by air pressure. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) a drinking straw (b) a compass needle (c) a medicine dropper (d) a bicycle pump
37. 37.🔍 Which is the odd one out? (a) a bicycle pump (b) a vacuum cleaner (c) a drinking straw (d) a magnetic chess set
38. 38.True or false: a fridge magnet works by magnetism. (a) False (b) True
39. 39.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to grow plants (c) to cool the glass (d) to catch any spills
40. 40.True or false: a medicine dropper works by magnetism. (a) False (b) True

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