Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 228 · 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) air pressure (b) magnetism
2. 2.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
3. 3.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it will not break (d) it is hotter
4. 4.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
5. 5.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
6. 6.🧺 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 stiff postcard (c) yeast (d) a glass of water
7. 7.⚖️ 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 keep it the same (b) we change it (c) we measure it
8. 8.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) water (c) smoke (d) air
9. 9.🔍 Which is the odd one out? (a) a fridge magnet (b) a drinking straw (c) a medicine dropper (d) a suction hook
10. 10.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
11. 11.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
12. 12.⚖️ 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 the one thing we change. (a) False (b) True
13. 13.🥛 Which of these works by magnetism? (a) a drinking straw (b) a vacuum cleaner (c) a fridge magnet (d) a suction hook
14. 14.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a magnet (c) a towel (d) turmeric powder
15. 15.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) near a plug point (c) over a laptop (d) on a bed
16. 16.True or false: a bicycle pump works by magnetism. (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: whether the card stays is what we measure. (a) True (b) False
18. 18.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
19. 19.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a compass needle (c) a medicine dropper (d) a magnetic pin holder
20. 20.⚖️ 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
21. 21.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) the cap is sticky (c) water is hiding there (d) air inside pushes back
22. 22.True or false: a suction hook works by air pressure. (a) False (b) True
23. 23.⚖️ 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) the way we turn it (c) how full the glass is (d) the same glass
24. 24.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) little air left inside (c) the card gets wet (d) water is heavier
25. 25.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic pin holder (c) a vacuum cleaner (d) a compass needle
26. 26.True or false: a compass needle works by air pressure. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) a suction hook (b) a drinking straw (c) a magnetic chess set (d) a medicine dropper
28. 28.⚖️ 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 measure it (c) we change it
29. 29.⚖️ 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
30. 30.True or false: a magnetic chess set works by magnetism. (a) True (b) False
31. 31.⚖️ 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) how full the glass is (b) the same card (c) the same glass (d) whether the card stays
32. 32.🥛 Which of these works by magnetism? (a) a drinking straw (b) a medicine dropper (c) a vacuum cleaner (d) a magnetic chess set
33. 33.⚖️ 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
34. 34.🔍 Which is the odd one out? (a) a medicine dropper (b) a magnetic chess set (c) a compass needle (d) a magnetic pin holder
35. 35.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
36. 36.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) yeast (c) a glass of water (d) a towel
37. 37.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
38. 38.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
39. 39.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) juice likes plastic (c) the straw is magnetic (d) air pushes it up
40. 40.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False

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