Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 575 · 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 magnetism? (a) a magnetic pin holder (b) a vacuum cleaner (c) a medicine dropper (d) a suction hook
2. 2.⚖️ 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 change it (b) we measure it (c) we keep it the same
3. 3.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) it looks nicer (c) water is heavier (d) the card gets wet
4. 4.🔮 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
5. 5.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
6. 6.⚖️ 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 way we turn it
7. 7.⚖️ 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
8. 8.⚖️ 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
9. 9.🥛 Which of these works by magnetism? (a) a compass needle (b) a medicine dropper (c) a drinking straw (d) a bicycle pump
10. 10.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
11. 11.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic chess set (c) a suction hook (d) a fridge magnet
12. 12.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
13. 13.True or false: a compass needle works by air pressure. (a) False (b) True
14. 14.🧺 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 stiff postcard (d) a sink or a bucket
15. 15.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
16. 16.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) a glass of water (d) yeast
17. 17.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
18. 18.🧺 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 mirror (d) a towel
19. 19.🧺 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 towel (d) yeast
20. 20.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
21. 21.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
22. 22.⚖️ 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 keep it the same (b) we measure it (c) we change it
23. 23.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a magnetic pin holder (c) a medicine dropper (d) a fridge magnet
24. 24.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a sink or a bucket (c) a battery cell (d) a stiff postcard
25. 25.🔮 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
26. 26.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a suction hook (c) a magnetic chess set (d) a medicine dropper
27. 27.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
28. 28.🔍 Which is the odd one out? (a) a drinking straw (b) a medicine dropper (c) a fridge magnet (d) a suction hook
29. 29.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is heavier (c) it is magnetic (d) it will not break
30. 30.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a battery cell (c) a towel (d) a magnet
31. 31.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a magnet (c) a towel (d) a stiff postcard
32. 32.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) on a bed (d) over a sink or bucket
33. 33.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we change it (b) we measure it (c) we keep it the same
34. 34.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
35. 35.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
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 same card (c) how full the glass is (d) whether the card stays
37. 37.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a magnet (c) yeast (d) a glass of water
38. 38.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the glass breaks (c) the card flies away (d) the card stays on
39. 39.True or false: a magnetic chess set works by magnetism. (a) True (b) False
40. 40.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) magnetism (c) air pressure (d) friction

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