Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 740 · 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? Which of these is what we measure? (a) the way we turn it (b) the same card (c) whether the card stays (d) the same glass
2. 2.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) yeast (c) a mirror (d) a towel
3. 3.🧺 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 glass of water
4. 4.⚖️ 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) False (b) True
5. 5.🥛 Which of these works by magnetism? (a) a drinking straw (b) a vacuum cleaner (c) a bicycle pump (d) a fridge magnet
6. 6.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) water (c) air (d) smoke
7. 7.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a magnetic chess set (d) a bicycle pump
8. 8.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
9. 9.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a balloon (c) a stiff postcard (d) a sink or a bucket
10. 10.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) water is hiding there (c) air inside pushes back (d) the bottle is magnetic
11. 11.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
12. 12.True or false: a medicine dropper works by air pressure. (a) True (b) False
13. 13.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic chess set (c) a vacuum cleaner (d) a fridge magnet
14. 14.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a towel (c) a stiff postcard (d) a sink or a bucket
15. 15.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) yeast (c) a stiff postcard (d) a balloon
16. 16.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) yeast (c) a stiff postcard (d) a glass of water
17. 17.True or false: a compass needle works by magnetism. (a) True (b) False
18. 18.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a magnetic pin holder (c) a medicine dropper (d) a compass needle
19. 19.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
20. 20.True or false: a bicycle pump works by magnetism. (a) True (b) False
21. 21.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) over a laptop (c) near a plug point (d) on a bed
22. 22.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a magnet (c) a towel (d) a sink or a bucket
23. 23.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a battery cell (c) a towel (d) a stiff postcard
24. 24.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) juice likes plastic (c) the straw is magnetic (d) the straw is hot
25. 25.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to catch any spills (c) to grow plants (d) to make it rain
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a battery cell (d) a stiff postcard
27. 27.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a mirror (c) a sink or a bucket (d) a towel
28. 28.⚖️ 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) the same card (d) how full the glass is
29. 29.⚖️ 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 measure it (b) we change it (c) we keep it the same
30. 30.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
31. 31.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
32. 32.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
33. 33.⚖️ 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
34. 34.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
35. 35.⚖️ 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
36. 36.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a battery cell (c) a magnet (d) a sink or a bucket
37. 37.🧺 Which of these is not needed for the card-on-a-glass trick? (a) yeast (b) a glass of water (c) a sink or a bucket (d) a stiff postcard
38. 38.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
39. 39.🔍 Which is the odd one out? (a) a magnetic chess set (b) a magnetic pin holder (c) a fridge magnet (d) a medicine dropper
40. 40.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False

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