Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 905 · 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 bicycle pump (b) a magnetic chess set (c) a magnetic pin holder (d) a compass needle
2. 2.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
3. 3.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
4. 4.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) a fridge magnet (b) a suction hook (c) a compass needle (d) a magnetic chess set
6. 6.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
7. 7.🔍 Which is the odd one out? (a) a suction hook (b) a bicycle pump (c) a compass needle (d) a medicine dropper
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 sink or a bucket (c) a balloon (d) a stiff postcard
9. 9.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a stiff postcard (c) a sink or a bucket (d) a glass of water
10. 10.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
11. 11.⚖️ 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) whether the card stays (b) the same glass (c) how full the glass is
12. 12.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) over a laptop (c) on a bed (d) near a plug point
13. 13.🔍 Which is the odd one out? (a) a drinking straw (b) a vacuum cleaner (c) a medicine dropper (d) a magnetic chess set
14. 14.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to grow plants (c) to make it rain (d) to catch any spills
15. 15.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
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 way we turn it”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) glue on the card (c) the cold water (d) a magnet
18. 18.🥛 Which of these works by magnetism? (a) a drinking straw (b) a suction hook (c) a bicycle pump (d) a fridge magnet
19. 19.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is magnetic (c) the straw is hot (d) air pushes it up
20. 20.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a medicine dropper (d) a compass needle
21. 21.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
22. 22.⚖️ 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 card (b) how full the glass is (c) whether the card stays (d) the same glass
23. 23.⚖️ 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
24. 24.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) turmeric powder (d) a stiff postcard
25. 25.⚖️ 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 the one thing we change. (a) False (b) True
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a stiff postcard (c) a towel (d) a glass of water
27. 27.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a drinking straw (c) a fridge magnet (d) a magnetic pin holder
28. 28.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
29. 29.🔍 Which is the odd one out? (a) a fridge magnet (b) a bicycle pump (c) a suction hook (d) a medicine dropper
30. 30.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
31. 31.True or false: a suction hook works by magnetism. (a) False (b) True
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 towel (c) a stiff postcard (d) a mirror
33. 33.⚖️ 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) True (b) False
34. 34.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is hotter (c) it will not break (d) it is magnetic
35. 35.🔍 Which is the odd one out? (a) a drinking straw (b) a medicine dropper (c) a magnetic pin holder (d) a bicycle pump
36. 36.⚖️ 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 measure it (c) we keep it the same
37. 37.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
38. 38.⚖️ 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 same card (b) the same glass (c) the way we turn it (d) how full the glass is
39. 39.⚖️ 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 measure it (b) we keep it the same (c) we change it
40. 40.🔍 Which is the odd one out? (a) a fridge magnet (b) a drinking straw (c) a magnetic pin holder (d) a magnetic chess set

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