Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 832 · 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 towel is needed for the card-on-a-glass trick. (a) False (b) True
2. 2.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
3. 3.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a towel (c) a balloon (d) a stiff postcard
4. 4.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
5. 5.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
6. 6.🔍 Which is the odd one out? (a) a compass needle (b) a drinking straw (c) a suction hook (d) a bicycle pump
7. 7.True or false: a suction hook 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) whether the card stays (b) the same glass (c) how full the glass is (d) the way we turn it
9. 9.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) True (b) False
10. 10.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a balloon (c) a sink or a bucket (d) a towel
11. 11.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
12. 12.⚖️ 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 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? Which of these is kept the same? (a) how full the glass is (b) the same card (c) whether the card stays
14. 14.⚖️ 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 change it (b) we measure it (c) we keep it the same
15. 15.🥛 Which of these works by magnetism? (a) a drinking straw (b) a suction hook (c) a fridge magnet (d) a bicycle pump
16. 16.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a magnetic chess set (c) a bicycle pump (d) a drinking straw
17. 17.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) turmeric powder (c) yeast (d) a glass of water
18. 18.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) glue on the card (c) air pushing up (d) the cold water
19. 19.🥛 Which of these works by magnetism? (a) a suction hook (b) a medicine dropper (c) a magnetic pin holder (d) a drinking straw
20. 20.🥛 Which of these works by air pressure? (a) a suction hook (b) a fridge magnet (c) a magnetic chess set (d) a compass needle
21. 21.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it will not break (d) it is hotter
22. 22.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
23. 23.🧺 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 stiff postcard (c) a mirror (d) a glass of water
24. 24.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
25. 25.🧺 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
26. 26.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a towel (c) turmeric powder (d) yeast
27. 27.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
29. 29.True or false: a fridge magnet works by magnetism. (a) False (b) True
30. 30.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
31. 31.🛟 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
32. 32.🧺 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 stiff postcard (d) yeast
33. 33.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
34. 34.True or false: a compass needle works by magnetism. (a) False (b) True
35. 35.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) air pushes it up (c) juice likes plastic (d) the straw is hot
36. 36.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a vacuum cleaner (d) a magnetic pin holder
37. 37.🔍 Which is the odd one out? (a) a suction hook (b) a vacuum cleaner (c) a magnetic pin holder (d) a bicycle pump
38. 38.⚖️ 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) how full the glass is (c) the same glass (d) the same card
39. 39.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
40. 40.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) True (b) False

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