Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 391 · 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 magnet is needed for the card-on-a-glass trick. (a) True (b) False
2. 2.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a stiff postcard (c) a sink or a bucket (d) a towel
3. 3.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) yeast (c) a sink or a bucket (d) a glass of water
4. 4.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
5. 5.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
6. 6.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
7. 7.True or false: a drinking straw works by magnetism. (a) True (b) False
8. 8.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a medicine dropper (c) a magnetic pin holder (d) a magnetic chess set
9. 9.True or false: a bicycle pump works by magnetism. (a) False (b) True
10. 10.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a glass of water (d) a mirror
11. 11.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
12. 12.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a battery cell (c) turmeric powder (d) a towel
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) a sink or a bucket (d) a towel
14. 14.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a towel (c) a glass of water (d) a sink or a bucket
15. 15.🔮 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 grow plants (d) to catch any spills
16. 16.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is heavier (c) it is magnetic (d) it is hotter
17. 17.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
18. 18.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
20. 20.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a bicycle pump (c) a magnetic pin holder (d) a magnetic chess set
21. 21.True or false: a vacuum cleaner works by air pressure. (a) False (b) True
22. 22.True or false: a bicycle pump works by air pressure. (a) False (b) True
23. 23.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
24. 24.🧺 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
25. 25.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a fridge magnet (c) a medicine dropper (d) a suction hook
26. 26.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
27. 27.🥛 Which of these works by magnetism? (a) a drinking straw (b) a vacuum cleaner (c) a suction hook (d) a compass needle
28. 28.⚖️ 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 change it (c) we keep it the same
29. 29.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic chess set (c) a compass needle (d) a bicycle pump
30. 30.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) air inside pushes back (c) the bottle is magnetic (d) the cap is sticky
31. 31.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a magnetic pin holder (d) a suction hook
32. 32.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a towel (d) a battery cell
33. 33.📘 Air presses on everything around us. What is this push called? (a) friction (b) air pressure (c) magnetism (d) sunlight
34. 34.🧺 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 stiff postcard (d) a mirror
35. 35.True or false: a magnet is not 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 what we measure? (a) the same glass (b) the way we turn it (c) how full the glass is (d) whether the card stays
37. 37.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
38. 38.⚖️ 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 keep it the same (c) we change it
39. 39.⚖️ 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) whether the card stays (c) the same glass (d) the same card
40. 40.🔍 Which is the odd one out? (a) a magnetic chess set (b) a fridge magnet (c) a medicine dropper (d) a compass needle

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