Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 486 · 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.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a laptop (d) over a sink or bucket
2. 2.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a drinking straw (d) a magnetic pin holder
3. 3.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the cap is sticky (c) the bottle is magnetic (d) air inside pushes back
4. 4.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is magnetic (c) it is hotter (d) it is heavier
5. 5.🥛 Which of these works by magnetism? (a) a compass needle (b) a vacuum cleaner (c) a suction hook (d) a drinking straw
6. 6.True or false: a medicine dropper works by magnetism. (a) True (b) False
7. 7.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
8. 8.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to catch any spills (c) to make it rain (d) to grow plants
9. 9.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
10. 10.⚖️ 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) whether the card stays (c) how full the glass is
11. 11.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a suction hook (d) a magnetic pin holder
12. 12.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
13. 13.True or false: a fridge magnet works by magnetism. (a) True (b) False
14. 14.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
15. 15.True or false: a vacuum cleaner works by air pressure. (a) False (b) True
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) False (b) True
17. 17.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a balloon (c) a stiff postcard (d) a towel
18. 18.⚖️ 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
19. 19.🔍 Which is the odd one out? (a) a compass needle (b) a bicycle pump (c) a magnetic pin holder (d) a fridge magnet
20. 20.🔍 Which is the odd one out? (a) a bicycle pump (b) a fridge magnet (c) a suction hook (d) a drinking straw
21. 21.⚖️ 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
22. 22.True or false: a compass needle works by magnetism. (a) True (b) False
23. 23.🧺 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 sink or a bucket
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.⚖️ 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
26. 26.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
27. 27.⚖️ 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) the same card (c) how full the glass is (d) the way we turn it
28. 28.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
29. 29.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
30. 30.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a sink or a bucket (c) a stiff postcard (d) a towel
31. 31.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
32. 32.🥛 Which of these works by magnetism? (a) a drinking straw (b) a bicycle pump (c) a medicine dropper (d) a fridge magnet
33. 33.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) a mirror (c) a battery cell (d) a balloon
34. 34.⚖️ 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 glass
35. 35.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
36. 36.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) air (d) water
37. 37.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a mirror (c) a sink or a bucket (d) a towel
38. 38.True or false: a suction hook works by magnetism. (a) False (b) True
39. 39.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) turmeric powder (d) a towel
40. 40.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a towel (c) a sink or a bucket (d) a stiff postcard

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