Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 310 · 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.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
2. 2.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a sink or a bucket (c) yeast (d) a balloon
3. 3.⚖️ 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
4. 4.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
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 measure it (b) we change it (c) we keep it the same
6. 6.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
7. 7.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a medicine dropper (c) a magnetic chess set (d) a suction hook
8. 8.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
9. 9.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the bottle is magnetic (c) the cap is sticky (d) air inside pushes back
10. 10.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) the cold water (c) air pushing up (d) a magnet
11. 11.⚖️ 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 measure it (b) we keep it the same (c) we change it
12. 12.🥛 Which of these works by magnetism? (a) a drinking straw (b) a compass needle (c) a vacuum cleaner (d) a bicycle pump
13. 13.🔍 Which is the odd one out? (a) a drinking straw (b) a fridge magnet (c) a suction hook (d) a vacuum cleaner
14. 14.🧺 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 towel (d) turmeric powder
15. 15.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
16. 16.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
17. 17.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) yeast (c) a stiff postcard (d) a glass of water
18. 18.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic chess set (c) a suction hook (d) a compass needle
19. 19.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a sink or bucket (c) near a plug point (d) over a laptop
20. 20.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a medicine dropper (c) a suction hook (d) a bicycle pump
21. 21.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
22. 22.⚖️ 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 kept the same. (a) False (b) True
23. 23.True or false: a suction hook works by air pressure. (a) True (b) False
24. 24.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
25. 25.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) True (b) False
26. 26.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
27. 27.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the glass breaks (c) the card stays on (d) the water turns to ice
28. 28.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
29. 29.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic chess set (c) a drinking straw (d) a fridge magnet
31. 31.⚖️ 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
32. 32.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
33. 33.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
34. 34.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic pin holder (c) a suction hook (d) a drinking straw
35. 35.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
36. 36.⚖️ 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 way we turn it
37. 37.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
38. 38.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a vacuum cleaner (c) a fridge magnet (d) a compass needle
39. 39.⚖️ 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 card (b) whether the card stays (c) how full the glass is
40. 40.🧺 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 balloon (d) a glass of water

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