Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 749 · 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 is the odd one out? (a) a magnetic pin holder (b) a vacuum cleaner (c) a magnetic chess set (d) a compass needle
2. 2.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a sink or a bucket (d) a balloon
3. 3.⚖️ 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 glass (d) the same card
4. 4.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
5. 5.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it is heavier (d) it will not break
6. 6.⚖️ 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 measure it (b) we change it (c) we keep it the same
7. 7.🔍 Which is the odd one out? (a) a magnetic chess set (b) a magnetic pin holder (c) a drinking straw (d) a compass needle
8. 8.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
9. 9.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) on a bed (c) over a laptop (d) near a plug point
10. 10.True or false: a fridge magnet works by air pressure. (a) True (b) False
11. 11.🧺 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 sink or a bucket (d) a magnet
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 glass breaks (c) the water turns to ice (d) the card stays on
13. 13.⚖️ 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 card (c) whether the card stays (d) the same glass
14. 14.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
15. 15.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) sand (d) air
16. 16.🔍 Which is the odd one out? (a) a medicine dropper (b) a fridge magnet (c) a magnetic chess set (d) a magnetic pin holder
17. 17.🔮 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
18. 18.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic chess set (c) a vacuum cleaner (d) a drinking straw
19. 19.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
20. 20.True or false: a medicine dropper works by air pressure. (a) False (b) True
21. 21.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
22. 22.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) True (b) False
23. 23.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
24. 24.⚖️ 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 the one thing we change. (a) False (b) True
25. 25.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
26. 26.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) turmeric powder (c) a magnet (d) a sink or a bucket
27. 27.⚖️ 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
28. 28.⚖️ 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
29. 29.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
30. 30.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a suction hook (d) a fridge magnet
31. 31.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) air inside pushes back (c) water is hiding there (d) the bottle is magnetic
32. 32.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
33. 33.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a mirror (c) a glass of water (d) a sink or a bucket
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 kept the same. (a) False (b) True
35. 35.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) juice likes plastic (c) air pushes it up (d) the straw is magnetic
36. 36.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a mirror (b) a glass of water (c) a stiff postcard (d) a sink or a bucket
37. 37.True or false: a medicine dropper works by magnetism. (a) False (b) True
38. 38.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
39. 39.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a suction hook (c) a fridge magnet (d) a drinking straw
40. 40.True or false: a bicycle pump works by magnetism. (a) False (b) True

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