Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 245 · 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 fridge magnet (b) a bicycle pump (c) a drinking straw (d) a vacuum cleaner
2. 2.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) on a bed (d) near a plug point
3. 3.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a stiff postcard (d) a mirror
4. 4.🔍 Which is the odd one out? (a) a bicycle pump (b) a fridge magnet (c) a suction hook (d) a medicine dropper
5. 5.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
6. 6.True or false: a medicine dropper works by air pressure. (a) False (b) True
7. 7.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) water is hiding there (c) air inside pushes back (d) the cap is sticky
8. 8.⚖️ 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
9. 9.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) sand (c) smoke (d) water
10. 10.⚖️ 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) how full the glass is (b) the way we turn it (c) the same glass (d) the same card
11. 11.True or false: a vacuum cleaner works by air pressure. (a) True (b) False
12. 12.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
13. 13.🧺 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 glass of water
14. 14.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
15. 15.True or false: a fridge magnet works by air pressure. (a) True (b) False
16. 16.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
17. 17.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
18. 18.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) it looks nicer (c) little air left inside (d) water is heavier
19. 19.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False
20. 20.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) turmeric powder (c) a towel (d) a balloon
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 way we turn it”? (a) we change it (b) we measure it (c) we keep it the same
22. 22.🧺 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 battery cell
23. 23.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) air pushes it up (c) the straw is magnetic (d) juice likes plastic
24. 24.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a compass needle (c) a magnetic pin holder (d) a fridge magnet
25. 25.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a balloon (c) a sink or a bucket (d) a stiff postcard
27. 27.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a sink or a bucket (d) a magnet
28. 28.⚖️ 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 keep it the same (b) we measure it (c) we change it
29. 29.True or false: a compass needle works by magnetism. (a) False (b) True
30. 30.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a drinking straw (c) a bicycle pump (d) a magnetic pin holder
31. 31.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a battery cell (c) a towel (d) a sink or a bucket
32. 32.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic chess set (c) a vacuum cleaner (d) a suction hook
33. 33.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
34. 34.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
35. 35.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) friction (c) sunlight (d) magnetism
36. 36.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
37. 37.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a drinking straw (c) a compass needle (d) a vacuum cleaner
38. 38.🔍 Which is the odd one out? (a) a drinking straw (b) a compass needle (c) a medicine dropper (d) a bicycle pump
39. 39.True or false: a fridge magnet works by magnetism. (a) False (b) True
40. 40.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a mirror (c) turmeric powder (d) a battery cell

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