Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 448 · 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.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a medicine dropper (c) a compass needle (d) a magnetic chess set
2. 2.🥛 Which of these works by air pressure? (a) a bicycle pump (b) a magnetic chess set (c) a magnetic pin holder (d) a fridge magnet
3. 3.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a glass of water (c) turmeric powder (d) yeast
4. 4.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) near a plug point (d) over a sink or bucket
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) whether the card stays (b) the same glass (c) how full the glass is (d) the same card
6. 6.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) a magnet (d) a glass of water
7. 7.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to catch any spills (c) to cool the glass (d) to grow plants
8. 8.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) the straw is hot (c) the straw is magnetic (d) juice likes plastic
9. 9.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
10. 10.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
11. 11.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
12. 12.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) True (b) False
13. 13.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) air pushing up (c) glue on the card (d) a magnet
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 measure it (b) we keep it the same (c) we change it
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 change it (b) we measure it (c) we keep it the same
16. 16.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
17. 17.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a glass of water (c) a stiff postcard (d) yeast
18. 18.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
19. 19.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) air (c) smoke (d) water
20. 20.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
21. 21.🔍 Which is the odd one out? (a) a drinking straw (b) a compass needle (c) a magnetic pin holder (d) a fridge magnet
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 kept the same. (a) False (b) True
23. 23.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
24. 24.⚖️ 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) True (b) False
25. 25.True or false: a drinking straw works by magnetism. (a) False (b) True
26. 26.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
27. 27.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a magnet (d) a sink or a bucket
28. 28.⚖️ 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 way we turn it (c) whether the card stays
29. 29.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a vacuum cleaner (c) a magnetic pin holder (d) a bicycle pump
30. 30.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
31. 31.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
32. 32.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a stiff postcard (c) a towel (d) a sink or a bucket
33. 33.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a towel (d) yeast
34. 34.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
35. 35.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
36. 36.⚖️ 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) the same glass (b) whether the card stays (c) how full the glass is
37. 37.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
38. 38.🔍 Which is the odd one out? (a) a medicine dropper (b) a magnetic chess set (c) a drinking straw (d) a suction hook
39. 39.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a stiff postcard (c) yeast (d) a battery cell
40. 40.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure

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