Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 227 · 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.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a balloon (c) a stiff postcard (d) a towel
2. 2.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a balloon (c) turmeric powder (d) a towel
3. 3.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
4. 4.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a bicycle pump (c) a suction hook (d) a fridge magnet
5. 5.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
6. 6.⚖️ 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
7. 7.⚖️ 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
8. 8.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a magnet (b) a glass of water (c) a stiff postcard (d) a sink or a bucket
9. 9.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
10. 10.🔮 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 grow plants (d) to cool the glass
11. 11.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
12. 12.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
13. 13.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) turmeric powder (c) a balloon (d) a magnet
14. 14.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a mirror (c) a magnet (d) turmeric powder
15. 15.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
16. 16.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) yeast (c) a towel (d) a glass of water
17. 17.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
18. 18.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) a sink or a bucket (d) a stiff postcard
19. 19.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) smoke (d) sand
20. 20.⚖️ 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) the same glass (c) whether the card stays
21. 21.True or false: a suction hook works by air pressure. (a) False (b) True
22. 22.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) near a plug point (c) over a sink or bucket (d) over a laptop
23. 23.🔮 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) air inside pushes back (d) the bottle is magnetic
24. 24.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) a magnet (d) a glass of water
25. 25.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a vacuum cleaner (c) a fridge magnet (d) a magnetic chess set
26. 26.🔍 Which is the odd one out? (a) a fridge magnet (b) a suction hook (c) a magnetic chess set (d) a magnetic pin holder
27. 27.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
28. 28.⚖️ 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 the one thing we change. (a) False (b) True
29. 29.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a drinking straw (d) a fridge magnet
30. 30.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a vacuum cleaner (d) a compass needle
32. 32.⚖️ 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
33. 33.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
34. 34.⚖️ 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
35. 35.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a glass of water (c) a sink or a bucket (d) a towel
36. 36.⚖️ 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
37. 37.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) yeast (c) a sink or a bucket (d) a towel
38. 38.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
39. 39.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a sink or a bucket (d) a balloon
40. 40.⚖️ 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 way we turn it (b) how full the glass is (c) whether the card stays (d) the same card

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