Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 709 · 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.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the water turns to ice (c) the card stays on (d) the card flies away
2. 2.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) yeast (c) a balloon (d) a sink or a bucket
3. 3.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the bottle is magnetic (c) water is hiding there (d) the cap is sticky
4. 4.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a towel (c) a balloon (d) turmeric powder
5. 5.⚖️ 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 same glass (c) whether the card stays (d) the same card
6. 6.⚖️ 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) the way we turn it (d) whether the card stays
7. 7.🔮 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 grow plants (d) to cool the glass
8. 8.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a vacuum cleaner (d) a magnetic pin holder
9. 9.⚖️ 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) True (b) False
10. 10.🔍 Which is the odd one out? (a) a suction hook (b) a compass needle (c) a drinking straw (d) a bicycle pump
11. 11.⚖️ 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 measure it (b) we keep it the same (c) we change it
12. 12.⚖️ 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) True (b) False
13. 13.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
14. 14.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
15. 15.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) a sink or a bucket (d) yeast
16. 16.🔍 Which is the odd one out? (a) a drinking straw (b) a medicine dropper (c) a fridge magnet (d) a suction hook
17. 17.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
18. 18.⚖️ 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 measure it (b) we keep it the same (c) we change it
19. 19.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
20. 20.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) a sink or a bucket (d) turmeric powder
21. 21.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
22. 22.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
23. 23.⚖️ 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 change it (b) we measure it (c) we keep it the same
24. 24.⚖️ 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
25. 25.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a drinking straw (c) a magnetic pin holder (d) a bicycle pump
26. 26.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a drinking straw (c) a suction hook (d) a compass needle
27. 27.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
28. 28.True or false: a fridge magnet works by air pressure. (a) False (b) True
29. 29.⚖️ 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) how full the glass is (c) whether the card stays
30. 30.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) air (c) sand (d) water
31. 31.🥛 Which of these works by air pressure? (a) a suction hook (b) a magnetic pin holder (c) a magnetic chess set (d) a compass needle
32. 32.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
33. 33.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) a magnet (c) glue on the card (d) air pushing up
34. 34.🧺 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) 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.🛟 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 magnetic (d) it is heavier
37. 37.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a balloon (c) a stiff postcard (d) a towel
38. 38.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
39. 39.🥛 Which of these works by air pressure? (a) a medicine dropper (b) a fridge magnet (c) a magnetic pin holder (d) a compass needle
40. 40.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a bicycle pump (c) a drinking straw (d) a magnetic chess set

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