Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 225 · 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.🧺 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 towel (d) a mirror
2. 2.⚖️ 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
3. 3.🔍 Which is the odd one out? (a) a bicycle pump (b) a vacuum cleaner (c) a magnetic pin holder (d) a suction hook
4. 4.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) water (d) air
5. 5.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a magnet (c) a sink or a bucket (d) a glass of water
6. 6.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) a glass of water (d) a magnet
7. 7.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a magnet (c) a balloon (d) a glass of water
8. 8.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
9. 9.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) a balloon (c) a magnet (d) a battery cell
10. 10.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic pin holder (c) a compass needle (d) a magnetic chess set
11. 11.True or false: a drinking straw works by magnetism. (a) False (b) True
12. 12.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
13. 13.⚖️ 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 keep it the same (b) we change it (c) we measure it
14. 14.🔍 Which is the odd one out? (a) a magnetic chess set (b) a medicine dropper (c) a bicycle pump (d) a vacuum cleaner
15. 15.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a sink or bucket (c) over a laptop (d) near a plug point
16. 16.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is kept the same. (a) False (b) True
17. 17.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a balloon (d) a towel
18. 18.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.True or false: a medicine dropper works by magnetism. (a) True (b) False
20. 20.⚖️ 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 measure it (b) we change it (c) we keep it the same
21. 21.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
22. 22.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it will not break (c) it is heavier (d) it is magnetic
23. 23.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
24. 24.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) water is hiding there (c) the bottle is magnetic (d) the cap is sticky
25. 25.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
26. 26.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to cool the glass (c) to make it rain (d) to catch any spills
27. 27.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a medicine dropper (c) a fridge magnet (d) a drinking straw
28. 28.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
29. 29.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a fridge magnet (d) a suction hook
30. 30.⚖️ 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 glass (c) whether the card stays
31. 31.True or false: a bicycle pump works by magnetism. (a) True (b) False
32. 32.🧺 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 towel (d) turmeric powder
33. 33.True or false: a bicycle pump works by air pressure. (a) False (b) True
34. 34.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) True (b) False
35. 35.⚖️ 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 way we turn it (d) how full the glass is
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) how full the glass is (b) the same glass (c) the same card (d) whether the card stays
37. 37.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) sunlight (c) friction (d) air pressure
38. 38.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
39. 39.🥛 Which of these works by magnetism? (a) a compass needle (b) a vacuum cleaner (c) a drinking straw (d) a bicycle pump
40. 40.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False

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