Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 432 · 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 suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
2. 2.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to cool the glass (c) to make it rain (d) to catch any spills
3. 3.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) yeast (c) a towel (d) a sink or a bucket
4. 4.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) on a bed (c) near a plug point (d) over a sink or bucket
5. 5.True or false: a medicine dropper works by magnetism. (a) False (b) True
6. 6.🧺 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 balloon (d) a towel
7. 7.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is hotter (d) it is magnetic
8. 8.🥛 Which of these works by magnetism? (a) a drinking straw (b) a bicycle pump (c) a magnetic pin holder (d) a vacuum cleaner
9. 9.⚖️ 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
10. 10.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a towel (c) a glass of water (d) a sink or a bucket
11. 11.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
12. 12.True or false: a drinking straw works by air pressure. (a) False (b) True
13. 13.⚖️ 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
14. 14.🔍 Which is the odd one out? (a) a drinking straw (b) a compass needle (c) a suction hook (d) a medicine dropper
15. 15.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a stiff postcard (c) a glass of water (d) a sink or a bucket
16. 16.⚖️ 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
17. 17.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
18. 18.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) water is hiding there (c) the cap is sticky (d) the bottle is magnetic
19. 19.⚖️ 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
20. 20.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) the straw is hot (c) air pushes it up (d) juice likes plastic
21. 21.True or false: a compass needle works by air pressure. (a) False (b) True
22. 22.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) glue on the card (c) a magnet (d) air pushing up
23. 23.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a bicycle pump (c) a magnetic pin holder (d) a compass needle
24. 24.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a sink or a bucket (d) turmeric powder
25. 25.True or false: a medicine dropper works by air pressure. (a) False (b) True
26. 26.⚖️ 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 same glass (b) the way we turn it (c) whether the card stays (d) how full the glass is
27. 27.⚖️ 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) False (b) True
28. 28.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a fridge magnet (c) a suction hook (d) a bicycle pump
29. 29.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a suction hook (c) a magnetic pin holder (d) a bicycle pump
30. 30.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is kept the same. (a) False (b) True
31. 31.True or false: a compass needle works by magnetism. (a) True (b) False
32. 32.🧺 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 magnet (d) a sink or a bucket
33. 33.⚖️ 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 glass (c) the way we turn it (d) whether the card stays
34. 34.🔍 Which is the odd one out? (a) a medicine dropper (b) a fridge magnet (c) a magnetic pin holder (d) a magnetic chess set
35. 35.⚖️ 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
36. 36.True or false: a magnetic chess set works by magnetism. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) a bicycle pump (b) a medicine dropper (c) a vacuum cleaner (d) a fridge magnet
38. 38.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
39. 39.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
40. 40.⚖️ 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) True (b) False

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