Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 828 · 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 is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a vacuum cleaner (d) a magnetic pin holder
2. 2.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a stiff postcard (c) a battery cell (d) a towel
3. 3.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to catch any spills (c) to make it rain (d) to cool the glass
4. 4.📘 Air presses on everything around us. What is this push called? (a) friction (b) magnetism (c) sunlight (d) air pressure
5. 5.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
6. 6.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
7. 7.⚖️ 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 glass (c) whether the card stays
8. 8.⚖️ 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) whether the card stays
9. 9.⚖️ 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) False (b) True
10. 10.⚖️ 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
11. 11.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
12. 12.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
13. 13.⚖️ 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) whether the card stays (c) how full the glass is (d) the way we turn it
14. 14.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
15. 15.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) over a sink or bucket (d) on a bed
16. 16.⚖️ 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
17. 17.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a sink or a bucket (c) a stiff postcard (d) a glass of water
18. 18.🔍 Which is the odd one out? (a) a medicine dropper (b) a bicycle pump (c) a suction hook (d) a fridge 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 keep it the same (b) we measure it (c) we change it
20. 20.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a battery cell (c) turmeric powder (d) a towel
21. 21.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a mirror (d) a sink or a bucket
22. 22.True or false: a drinking straw works by magnetism. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) a magnetic chess set (b) a fridge magnet (c) a compass needle (d) a suction hook
24. 24.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) the cold water (c) glue on the card (d) air pushing up
25. 25.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a magnetic chess set (d) a vacuum cleaner
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 change it (b) we measure it (c) we keep it the same
27. 27.True or false: a bicycle pump works by magnetism. (a) True (b) False
28. 28.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
29. 29.🔍 Which is the odd one out? (a) a magnetic chess set (b) a fridge magnet (c) a drinking straw (d) a magnetic pin holder
30. 30.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
31. 31.🥛 Which of these works by magnetism? (a) a compass needle (b) a vacuum cleaner (c) a suction hook (d) a medicine dropper
32. 32.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a stiff postcard (c) a mirror (d) yeast
33. 33.🧺 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
34. 34.⚖️ 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) True (b) False
35. 35.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a drinking straw (c) a magnetic pin holder (d) a magnetic chess set
36. 36.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
37. 37.⚖️ 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 kept the same. (a) True (b) False
38. 38.⚖️ 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
39. 39.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it will not break (c) it is heavier (d) it is hotter
40. 40.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) water is hiding there (c) air inside pushes back (d) the cap is sticky

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