Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 528 · 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.True or false: a magnetic chess set works by air pressure. (a) True (b) False
2. 2.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
3. 3.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a drinking straw (c) a vacuum cleaner (d) a medicine dropper
4. 4.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a drinking straw (c) a magnetic chess set (d) a medicine dropper
5. 5.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
6. 6.⚖️ 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) True (b) False
7. 7.True or false: a medicine dropper works by magnetism. (a) True (b) False
8. 8.⚖️ 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) the same card
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.⚖️ 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
11. 11.🥛 Which of these works by air pressure? (a) a suction hook (b) a fridge magnet (c) a magnetic chess set (d) a magnetic pin holder
12. 12.⚖️ 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 measure it (b) we keep it the same (c) we change it
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 way we turn it”? (a) we change it (b) we measure it (c) we keep it the same
14. 14.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) air pushing up (c) a magnet (d) glue on the card
15. 15.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a bicycle pump (d) a magnetic chess set
16. 16.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
17. 17.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it will not break (c) it is heavier (d) it is magnetic
18. 18.⚖️ 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) False (b) True
19. 19.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) the straw is magnetic (c) juice likes plastic (d) the straw is hot
20. 20.⚖️ 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 glass (b) whether the card stays (c) how full the glass is (d) the same card
21. 21.🧺 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
22. 22.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a medicine dropper (c) a drinking straw (d) a suction hook
23. 23.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) it looks nicer (c) water is heavier (d) little air left inside
24. 24.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False
25. 25.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
26. 26.🧺 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
27. 27.🧺 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 towel
28. 28.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to make it rain (c) to catch any spills (d) to grow plants
29. 29.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
30. 30.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a magnetic pin holder (c) a drinking straw (d) a compass needle
31. 31.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
32. 32.True or false: a bicycle pump works by air pressure. (a) True (b) False
33. 33.True or false: a compass needle works by air pressure. (a) False (b) True
34. 34.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
35. 35.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
36. 36.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a sink or a bucket (c) a balloon (d) yeast
37. 37.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a glass of water (c) a battery cell (d) a stiff postcard
38. 38.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
39. 39.🧺 Do we need a magnet 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: whether the card stays is what we measure. (a) True (b) False

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