Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 478 · 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.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) yeast (c) a glass of water (d) a sink or a bucket
2. 2.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
3. 3.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a compass needle (c) a drinking straw (d) a fridge magnet
4. 4.🔍 Which is the odd one out? (a) a bicycle pump (b) a medicine dropper (c) a vacuum cleaner (d) a magnetic chess set
5. 5.🔍 Which is the odd one out? (a) a suction hook (b) a vacuum cleaner (c) a fridge magnet (d) a bicycle pump
6. 6.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
7. 7.⚖️ 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
8. 8.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
9. 9.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
10. 10.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a compass needle (c) a fridge magnet (d) a bicycle pump
11. 11.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
12. 12.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
13. 13.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to make it rain (c) to catch any spills (d) to cool the glass
14. 14.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
15. 15.⚖️ 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 change it (c) we keep it the same
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 change it (b) we keep it the same (c) we measure it
17. 17.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) the card gets wet (c) it looks nicer (d) water is heavier
18. 18.True or false: a drinking straw works by magnetism. (a) True (b) False
19. 19.⚖️ 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
20. 20.⚖️ 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
21. 21.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) turmeric powder (d) a sink or a bucket
22. 22.True or false: a fridge magnet works by air pressure. (a) True (b) False
23. 23.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a magnet (c) a sink or a bucket (d) a balloon
24. 24.🧺 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 balloon (d) a sink or a bucket
25. 25.⚖️ 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) whether the card stays (d) the way we turn it
26. 26.🔍 Which is the odd one out? (a) a suction hook (b) a bicycle pump (c) a vacuum cleaner (d) a magnetic pin holder
27. 27.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
28. 28.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a magnet (c) a glass of water (d) a towel
29. 29.True or false: a drinking straw works by air pressure. (a) False (b) True
30. 30.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a drinking straw (c) a compass needle (d) a suction hook
31. 31.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a magnetic pin holder (c) a magnetic chess set (d) a compass needle
32. 32.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
33. 33.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) yeast (c) a sink or a bucket (d) a glass of water
34. 34.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) a suction hook (b) a fridge magnet (c) a magnetic chess set (d) a compass needle
36. 36.True or false: a magnetic chess set works by air pressure. (a) True (b) False
37. 37.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
38. 38.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
39. 39.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) water (c) smoke (d) air
40. 40.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True

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