Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 733 · 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 works by air pressure? (a) a medicine dropper (b) a fridge magnet (c) a magnetic chess set (d) a compass needle
2. 2.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) on a bed (d) over a sink or bucket
3. 3.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
4. 4.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic pin holder (c) a compass needle (d) a magnetic chess set
5. 5.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
6. 6.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a drinking straw (c) a bicycle pump (d) a compass needle
7. 7.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a medicine dropper (c) a drinking straw (d) a magnetic pin holder
8. 8.🧺 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) turmeric powder (d) a sink or a bucket
9. 9.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a battery cell (c) a sink or a bucket (d) a glass of water
10. 10.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) the straw is hot (c) juice likes plastic (d) air pushes it up
11. 11.⚖️ 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) how full the glass is (c) the same card (d) the same glass
12. 12.🔍 Which is the odd one out? (a) a suction hook (b) a drinking straw (c) a fridge magnet (d) a bicycle pump
13. 13.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a drinking straw (c) a magnetic pin holder (d) a bicycle pump
14. 14.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
15. 15.🔍 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 card stays on (c) the card flies away (d) the glass breaks
16. 16.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) smoke (c) water (d) air
17. 17.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the cap is sticky (c) the bottle is magnetic (d) air inside pushes back
18. 18.⚖️ 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) how full the glass is (b) the same glass (c) whether the card stays
19. 19.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) friction (c) air pressure (d) magnetism
20. 20.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
21. 21.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
22. 22.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a balloon (c) a towel (d) a stiff postcard
23. 23.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a mirror (c) a glass of water (d) a sink or a bucket
24. 24.🛟 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
25. 25.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a magnet (c) a glass of water (d) a sink or a bucket
26. 26.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
27. 27.True or false: a fridge magnet works by magnetism. (a) False (b) True
28. 28.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a magnetic chess set (d) a drinking straw
29. 29.⚖️ 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) True (b) False
30. 30.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) True (b) False
31. 31.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
32. 32.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to catch any spills (c) to make it rain (d) to grow plants
33. 33.True or false: a medicine dropper works by magnetism. (a) True (b) False
34. 34.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
35. 35.⚖️ 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 change it (b) we keep it the same (c) we measure it
36. 36.🥛 Which of these works by air pressure? (a) a drinking straw (b) a magnetic chess set (c) a fridge magnet (d) a magnetic pin holder
37. 37.⚖️ 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 change it (c) we measure it
38. 38.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a compass needle (c) a bicycle pump (d) a suction hook
39. 39.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
40. 40.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True

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