Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 283 · 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? Which of these is the one thing we change? (a) the same glass (b) the way we turn it (c) whether the card stays (d) how full the glass is
2. 2.⚖️ 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
3. 3.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
4. 4.🔮 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
5. 5.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a suction hook (d) a compass needle
6. 6.⚖️ 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
7. 7.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a sink or bucket (c) over a laptop (d) near a plug point
8. 8.🧺 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 mirror (d) a sink or a bucket
9. 9.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a stiff postcard (c) a towel (d) a glass of water
10. 10.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
11. 11.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) a battery cell (c) turmeric powder (d) a mirror
12. 12.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
13. 13.🔍 Which is the odd one out? (a) a suction hook (b) a fridge magnet (c) a bicycle pump (d) a drinking straw
14. 14.🧺 Which of these is not needed for the card-on-a-glass trick? (a) turmeric powder (b) a sink or a bucket (c) a stiff postcard (d) a towel
15. 15.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a drinking straw (d) a compass needle
16. 16.⚖️ 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
17. 17.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) a fridge magnet (b) a medicine dropper (c) a magnetic chess set (d) a magnetic pin holder
19. 19.⚖️ 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) False (b) True
20. 20.True or false: a fridge magnet works by air pressure. (a) False (b) True
21. 21.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is heavier (c) it is hotter (d) it is magnetic
22. 22.🥛 Which of these works by air pressure? (a) a suction hook (b) a compass needle (c) a fridge magnet (d) a magnetic chess set
23. 23.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
24. 24.🥛 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
25. 25.🧺 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 glass of water (d) yeast
26. 26.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a bicycle pump (c) a compass needle (d) a vacuum cleaner
27. 27.⚖️ 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) whether the card stays (b) how full the glass is (c) the same card
28. 28.🔮 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
29. 29.True or false: a drinking straw works by air pressure. (a) False (b) True
30. 30.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
31. 31.True or false: a fridge magnet works by magnetism. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a magnetic pin holder (d) a bicycle pump
33. 33.⚖️ 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 change it (c) we keep it the same
34. 34.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
35. 35.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a mirror (c) a stiff postcard (d) turmeric powder
36. 36.True or false: a suction hook works by air pressure. (a) False (b) True
37. 37.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a magnetic chess set (d) a bicycle pump
38. 38.True or false: a medicine dropper works by air pressure. (a) True (b) False
39. 39.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a balloon (c) a sink or a bucket (d) yeast
40. 40.🔍 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

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