Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 451 · 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 does juice go up a drinking straw when you sip? (a) air pushes it up (b) the straw is magnetic (c) the straw is hot (d) juice likes plastic
2. 2.🔍 Which is the odd one out? (a) a fridge magnet (b) a bicycle pump (c) a compass needle (d) a magnetic pin holder
3. 3.True or false: a fridge magnet works by magnetism. (a) False (b) True
4. 4.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a sink or a bucket (c) a stiff postcard (d) a towel
5. 5.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic pin holder (c) a magnetic chess set (d) a medicine dropper
6. 6.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
7. 7.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
8. 8.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
9. 9.🥛 Does a suction hook 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? Which of these is what we measure? (a) how full the glass is (b) the same glass (c) the same card (d) whether the card stays
11. 11.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a stiff postcard (c) a battery cell (d) a magnet
12. 12.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a towel (c) a stiff postcard (d) a sink or a bucket
13. 13.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
14. 14.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) turmeric powder (c) a sink or a bucket (d) a glass of water
15. 15.True or false: a suction hook works by air pressure. (a) False (b) True
16. 16.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a magnetic pin holder (c) a bicycle pump (d) a suction hook
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 kept the same. (a) True (b) False
18. 18.True or false: a drinking straw works by air pressure. (a) True (b) False
19. 19.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
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 change it (c) we keep it the same
21. 21.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
22. 22.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
23. 23.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to make it rain (c) to grow plants (d) to cool the glass
24. 24.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
25. 25.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) True (b) False
26. 26.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
27. 27.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a glass of water (c) a sink or a bucket (d) a towel
28. 28.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
29. 29.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
30. 30.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a compass needle (c) a magnetic chess set (d) a medicine dropper
31. 31.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a towel (c) a magnet (d) turmeric powder
32. 32.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a bicycle pump (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? What do we do with “whether the card stays”? (a) we keep it the same (b) we measure it (c) we change it
34. 34.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a fridge magnet (c) a vacuum cleaner (d) a drinking straw
35. 35.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) water (d) air
36. 36.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a magnetic chess set (d) a vacuum cleaner
37. 37.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is magnetic (c) it is hotter (d) it will not break
38. 38.⚖️ 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 measure it (b) we change it (c) we keep it the same
39. 39.⚖️ 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) whether the card stays (b) the same card (c) the way we turn it (d) how full the glass is
40. 40.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a stiff postcard (c) a towel (d) yeast

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