Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 851 · 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.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
2. 2.⚖️ 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 same card
3. 3.⚖️ 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
4. 4.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
5. 5.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
6. 6.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a medicine dropper (c) a magnetic chess set (d) a magnetic pin holder
7. 7.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a bicycle pump (c) a magnetic chess set (d) a magnetic pin holder
8. 8.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
9. 9.⚖️ 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 same glass (b) how full the glass is (c) whether the card stays
10. 10.⚖️ 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 way we turn it (b) how full the glass is (c) the same glass (d) whether the card stays
11. 11.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) air inside pushes back (c) the bottle is magnetic (d) the cap is sticky
12. 12.⚖️ 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 change it (c) we keep it the same
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a glass of water (c) a towel (d) a stiff postcard
14. 14.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
15. 15.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to grow plants (c) to make it rain (d) to cool the glass
16. 16.True or false: a drinking straw works by magnetism. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) a medicine dropper (b) a compass needle (c) a suction hook (d) a bicycle pump
18. 18.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a magnet (b) a stiff postcard (c) a towel (d) a glass of water
19. 19.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a drinking straw (d) a magnetic pin holder
20. 20.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic chess set (c) a medicine dropper (d) a compass needle
21. 21.⚖️ 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
22. 22.🥛 Which of these works by magnetism? (a) a drinking straw (b) a suction hook (c) a bicycle pump (d) a fridge magnet
23. 23.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
24. 24.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
25. 25.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) glue on the card (c) air pushing up (d) the cold water
26. 26.⚖️ 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 keep it the same (c) we change it
27. 27.True or false: a fridge magnet works by magnetism. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a magnetic pin holder (d) a medicine dropper
29. 29.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
30. 30.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
31. 31.⚖️ 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 kept the same. (a) True (b) False
32. 32.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) smoke (c) water (d) air
33. 33.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is magnetic (c) it is heavier (d) it will not break
34. 34.⚖️ 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) False (b) True
35. 35.🥛 Which of these works by air pressure? (a) a drinking straw (b) a magnetic pin holder (c) a fridge magnet (d) a magnetic chess set
36. 36.True or false: a bicycle pump works by magnetism. (a) False (b) True
37. 37.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) turmeric powder (c) a glass of water (d) a stiff postcard
38. 38.🛟 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
39. 39.🔍 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 card stays on (c) the card flies away (d) the glass breaks
40. 40.True or false: a magnetic chess set works by air pressure. (a) True (b) False

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