Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 483 · 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.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
2. 2.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
3. 3.⚖️ 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
4. 4.True or false: a medicine dropper works by magnetism. (a) False (b) True
5. 5.🧺 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 glass of water (c) turmeric powder (d) a towel
6. 6.True or false: a suction hook works by air pressure. (a) True (b) False
7. 7.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
8. 8.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
9. 9.🧺 Which of these is not needed for the card-on-a-glass trick? (a) yeast (b) a towel (c) a sink or a bucket (d) a glass of water
10. 10.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) turmeric powder (c) a mirror (d) a glass of water
11. 11.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
12. 12.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
13. 13.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) on a bed (c) over a sink or bucket (d) near a plug point
14. 14.⚖️ 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
15. 15.🔍 Which is the odd one out? (a) a medicine dropper (b) a compass needle (c) a vacuum cleaner (d) a bicycle pump
16. 16.⚖️ 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
17. 17.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
18. 18.🥛 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
19. 19.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a bicycle pump (c) a fridge magnet (d) a magnetic pin holder
20. 20.🧺 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) a magnet (d) a sink or a bucket
21. 21.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) yeast (d) a sink or a bucket
22. 22.🧺 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 battery cell (d) a glass of water
23. 23.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
24. 24.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
25. 25.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
26. 26.🔮 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) the cap is sticky (d) water is hiding there
27. 27.⚖️ 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
28. 28.🥛 Which of these works by air pressure? (a) a medicine dropper (b) a magnetic chess set (c) a compass needle (d) a magnetic pin holder
29. 29.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic chess set (c) a fridge magnet (d) a vacuum cleaner
30. 30.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) magnetism (c) air pressure (d) friction
31. 31.🔍 Which is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a drinking straw (d) a magnetic pin holder
32. 32.True or false: a bicycle pump works by air pressure. (a) False (b) True
33. 33.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
34. 34.⚖️ 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) False (b) True
35. 35.⚖️ 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) how full the glass is (c) the same glass (d) the same card
36. 36.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a sink or a bucket (d) a balloon
37. 37.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to make it rain (c) to cool the glass (d) to grow plants
38. 38.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
39. 39.True or false: a compass needle works by magnetism. (a) False (b) True
40. 40.⚖️ 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) whether the card stays (c) the way we turn it

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