Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 480 · 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.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to catch any spills (c) to cool the glass (d) to make it rain
2. 2.True or false: a bicycle pump works by magnetism. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) a drinking straw (b) a compass needle (c) a bicycle pump (d) a vacuum cleaner
4. 4.⚖️ 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) how full the glass is (c) the way we turn it (d) whether the card stays
5. 5.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
6. 6.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic chess set (c) a magnetic pin holder (d) a medicine dropper
7. 7.⚖️ 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 change it (c) we measure it
8. 8.📘 Air presses on everything around us. What is this push called? (a) friction (b) magnetism (c) sunlight (d) air pressure
9. 9.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
10. 10.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) False (b) True
11. 11.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a mirror (d) a sink or a bucket
12. 12.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a sink or bucket (c) near a plug point (d) over a laptop
13. 13.⚖️ 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
14. 14.True or false: a medicine dropper works by air pressure. (a) True (b) False
15. 15.⚖️ 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
16. 16.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
17. 17.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
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) whether the card stays (c) the same card
19. 19.⚖️ 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 keep it the same (b) we change it (c) we measure it
20. 20.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) the straw is magnetic (c) air pushes it up (d) juice likes plastic
21. 21.⚖️ 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
22. 22.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a mirror (c) a sink or a bucket (d) a glass of water
23. 23.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic chess set (c) a fridge magnet (d) a vacuum cleaner
24. 24.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
25. 25.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a magnetic pin holder (c) a fridge magnet (d) a drinking straw
26. 26.⚖️ 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 measure it (c) we change it
27. 27.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
29. 29.🥛 Which of these works by air pressure? (a) a suction hook (b) a fridge magnet (c) a magnetic pin holder (d) a magnetic chess set
30. 30.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
31. 31.True or false: a drinking straw works by magnetism. (a) True (b) False
32. 32.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
33. 33.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) air (c) water (d) sand
34. 34.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a magnetic chess set (d) a vacuum cleaner
35. 35.⚖️ 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
36. 36.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic chess set (c) a fridge magnet (d) a drinking straw
37. 37.🔍 Which is the odd one out? (a) a medicine dropper (b) a suction hook (c) a bicycle pump (d) a magnetic chess set
38. 38.🧺 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 sink or a bucket
39. 39.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it will not break (c) it is hotter (d) it is heavier
40. 40.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed

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