Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 95 · 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.⚖️ 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
2. 2.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is hotter (d) it is magnetic
3. 3.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) on a bed (c) near a plug point (d) over a sink or bucket
4. 4.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
5. 5.⚖️ 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 card (c) the same glass (d) whether the card stays
6. 6.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
7. 7.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic chess set (c) a suction hook (d) a compass needle
8. 8.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a magnetic chess set (d) a medicine dropper
10. 10.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a mirror (c) a stiff postcard (d) a magnet
11. 11.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
12. 12.🧺 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 towel (c) a balloon (d) a glass of water
13. 13.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) air pushes it up (c) the straw is magnetic (d) juice likes plastic
14. 14.⚖️ 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) whether the card stays (c) the same card (d) the same glass
15. 15.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
16. 16.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a sink or a bucket (d) a battery cell
17. 17.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) True (b) False
18. 18.True or false: a bicycle pump works by air pressure. (a) True (b) False
19. 19.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
20. 20.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a compass needle (c) a fridge magnet (d) a magnetic chess set
21. 21.🧺 Do we need a glass of water 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? True or false: whether the card stays is the one thing we change. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) a drinking straw (b) a suction hook (c) a bicycle pump (d) a magnetic chess set
24. 24.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
25. 25.⚖️ 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
26. 26.⚖️ 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
27. 27.True or false: a drinking straw works by air pressure. (a) True (b) False
28. 28.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
29. 29.True or false: a compass needle works by magnetism. (a) False (b) True
30. 30.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a mirror (c) a sink or a bucket (d) a towel
31. 31.⚖️ 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
32. 32.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
33. 33.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
34. 34.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) the cold water (c) air pushing up (d) a magnet
35. 35.🧺 Which of these is needed for the card-on-a-glass trick? (a) a sink or a bucket (b) yeast (c) turmeric powder (d) a battery cell
36. 36.True or false: a suction hook works by magnetism. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a drinking straw (d) a magnetic chess set
38. 38.True or false: a medicine dropper works by magnetism. (a) True (b) False
39. 39.⚖️ 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
40. 40.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True

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