Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 877 · 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.⚖️ 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) False (b) True
2. 2.⚖️ 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
3. 3.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
4. 4.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a drinking straw (c) a bicycle pump (d) a suction hook
5. 5.⚖️ 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
6. 6.🔍 Which is the odd one out? (a) a suction hook (b) a bicycle pump (c) a magnetic chess set (d) a medicine dropper
7. 7.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) water is hiding there (c) air inside pushes back (d) the bottle is magnetic
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) whether the card stays (c) the way we turn it (d) the same glass
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 kept the same. (a) True (b) False
10. 10.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a bicycle pump (d) a magnetic chess set
11. 11.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) yeast (c) a glass of water (d) a magnet
12. 12.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) a magnet (c) the cold water (d) glue on the card
13. 13.True or false: a medicine dropper works by air pressure. (a) False (b) True
14. 14.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to cool the glass (c) to catch any spills (d) to make it rain
15. 15.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) near a plug point (c) over a laptop (d) over a sink or bucket
16. 16.🛟 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
17. 17.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
18. 18.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) turmeric powder (c) a balloon (d) a sink or a bucket
19. 19.True or false: a bicycle pump works by magnetism. (a) True (b) False
20. 20.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a stiff postcard (d) yeast
21. 21.⚖️ 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 change it (b) we keep it the same (c) we measure it
22. 22.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a drinking straw (c) a bicycle pump (d) a magnetic chess set
23. 23.🔍 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 card flies away (c) the glass breaks (d) the water turns to ice
24. 24.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a balloon (c) a battery cell (d) a towel
25. 25.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a compass needle (d) a suction hook
26. 26.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
27. 27.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
28. 28.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) True (b) False
29. 29.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) a battery cell (d) a glass of water
30. 30.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
31. 31.⚖️ 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
32. 32.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a battery cell (d) a stiff postcard
33. 33.True or false: a suction hook works by air pressure. (a) False (b) True
34. 34.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
35. 35.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
36. 36.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a compass needle (d) a drinking straw
37. 37.🧺 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 balloon (c) a glass of water (d) a towel
38. 38.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a medicine dropper (c) a compass needle (d) a vacuum cleaner
39. 39.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
40. 40.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a magnet (d) a towel

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