Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 671 · 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.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
2. 2.True or false: a medicine dropper works by air pressure. (a) False (b) True
3. 3.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
4. 4.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
5. 5.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) yeast (c) a mirror (d) a stiff postcard
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) how full the glass is (b) the way we turn it (c) the same card (d) the same glass
7. 7.📘 Air presses on everything around us. What is this push called? (a) friction (b) air pressure (c) sunlight (d) magnetism
8. 8.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
9. 9.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
10. 10.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to cool the glass (c) to grow plants (d) to make it rain
11. 11.🥛 Which of these works by magnetism? (a) a drinking straw (b) a medicine dropper (c) a vacuum cleaner (d) a compass needle
12. 12.🧺 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 magnet (d) a stiff postcard
13. 13.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
14. 14.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) it looks nicer (c) water is heavier (d) little air left inside
15. 15.True or false: a fridge magnet works by air pressure. (a) False (b) True
16. 16.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
17. 17.⚖️ 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 keep it the same (c) we measure it
18. 18.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) the cold water (c) air pushing up (d) a magnet
19. 19.⚖️ 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 change it (b) we measure it (c) we keep it the same
20. 20.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a battery cell (c) a towel (d) turmeric powder
21. 21.True or false: a bicycle pump works by air pressure. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) a suction hook (b) a bicycle pump (c) a drinking straw (d) a compass needle
23. 23.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
24. 24.🧺 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 towel (d) a battery cell
25. 25.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a laptop (d) over a sink or bucket
26. 26.⚖️ 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 way we turn it (b) whether the card stays (c) how full the glass is
27. 27.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) False (b) True
28. 28.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
29. 29.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a balloon (c) a sink or a bucket (d) a towel
30. 30.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
31. 31.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
32. 32.🧺 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 sink or a bucket (d) turmeric powder
33. 33.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) sand (d) smoke
34. 34.⚖️ 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 keep it the same (c) we change it
35. 35.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
36. 36.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a sink or a bucket (d) a battery cell
37. 37.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it is hotter (d) it will not break
38. 38.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the cap is sticky (c) the bottle is magnetic (d) air inside pushes back
39. 39.True or false: a medicine dropper works by magnetism. (a) True (b) False
40. 40.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is what we measure. (a) True (b) False

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