Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 544 · 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.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a compass needle (c) a drinking straw (d) a bicycle pump
2. 2.⚖️ 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
3. 3.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a towel (d) a mirror
4. 4.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
5. 5.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a drinking straw (d) a compass needle
6. 6.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
7. 7.True or false: a bicycle pump works by magnetism. (a) False (b) True
8. 8.⚖️ 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
9. 9.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) sand (c) smoke (d) water
10. 10.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
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.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is kept the same. (a) True (b) False
13. 13.🔮 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
14. 14.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
15. 15.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
16. 16.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) over a sink or bucket (d) on a bed
17. 17.⚖️ 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
18. 18.📘 Air presses on everything around us. What is this push called? (a) friction (b) sunlight (c) magnetism (d) air pressure
19. 19.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) the straw is hot (c) juice likes plastic (d) air pushes it up
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 towel (c) turmeric powder (d) a sink or a bucket
21. 21.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
22. 22.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
23. 23.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
24. 24.⚖️ 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 measure it (b) we change it (c) we keep it the same
25. 25.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
26. 26.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a vacuum cleaner (d) a fridge magnet
28. 28.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
29. 29.🧺 Do we need a glass of water 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 sink or a bucket (b) a glass of water (c) a magnet (d) a stiff postcard
31. 31.⚖️ 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) True (b) False
32. 32.⚖️ 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) the same glass (c) the same card (d) how full the glass is
33. 33.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a battery cell (c) a stiff postcard (d) a sink or a bucket
34. 34.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
35. 35.🧺 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 towel (d) a sink or a bucket
36. 36.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a suction hook (c) a vacuum cleaner (d) a magnetic pin holder
37. 37.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a mirror (b) a towel (c) a glass of water (d) a sink or a bucket
38. 38.True or false: a fridge magnet works by air pressure. (a) False (b) True
39. 39.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a magnet (c) a stiff postcard (d) a glass of water
40. 40.🧺 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 towel (d) a balloon

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