Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 902 · 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 air pressure? (a) a fridge magnet (b) a bicycle pump (c) a compass needle (d) a magnetic chess set
2. 2.⚖️ 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
3. 3.⚖️ 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) True (b) False
4. 4.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a compass needle (c) a suction hook (d) a magnetic chess set
5. 5.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
6. 6.⚖️ 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
7. 7.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
8. 8.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a towel (c) a sink or a bucket (d) a stiff postcard
9. 9.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) yeast (d) a sink or a bucket
10. 10.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is the one thing we change. (a) False (b) True
11. 11.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) a magnet (c) glue on the card (d) the cold water
12. 12.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
13. 13.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) True (b) False
14. 14.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
15. 15.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) the card gets wet (c) water is heavier (d) little air left inside
16. 16.True or false: a magnetic chess set works by air pressure. (a) True (b) False
17. 17.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) yeast (c) a stiff postcard (d) a glass of water
18. 18.🔍 Which is the odd one out? (a) a magnetic chess set (b) a fridge magnet (c) a compass needle (d) a drinking straw
19. 19.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a magnet (c) yeast (d) a balloon
20. 20.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the glass breaks (c) the card flies away (d) the water turns to ice
21. 21.⚖️ 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 card (d) the same glass
22. 22.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
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 measure it (b) we keep it the same (c) we change it
24. 24.⚖️ 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 change it (c) we measure it
25. 25.⚖️ 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 way we turn it (c) whether the card stays (d) the same glass
26. 26.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
27. 27.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to make it rain (c) to catch any spills (d) to cool the glass
28. 28.⚖️ 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 keep it the same (b) we change it (c) we measure it
29. 29.⚖️ 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 what we measure. (a) True (b) False
30. 30.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
31. 31.True or false: a compass needle works by air pressure. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) a suction hook (b) a vacuum cleaner (c) a bicycle pump (d) a compass needle
33. 33.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
34. 34.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) juice likes plastic (c) the straw is magnetic (d) the straw is hot
35. 35.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) False (b) True
36. 36.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a magnet (c) a towel (d) a stiff postcard
37. 37.True or false: a medicine dropper works by air pressure. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a drinking straw (c) a suction hook (d) a fridge magnet
39. 39.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
40. 40.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) turmeric powder (c) a mirror (d) yeast

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