Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 661 · 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 battery cell is needed for the card-on-a-glass trick. (a) False (b) True
2. 2.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it is hotter (d) it will not break
3. 3.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
4. 4.⚖️ 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
5. 5.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) True (b) False
6. 6.⚖️ 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 card (c) the same glass (d) how full the glass is
7. 7.True or false: a compass needle works by air pressure. (a) False (b) True
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 the one thing we change. (a) True (b) False
9. 9.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
10. 10.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) juice likes plastic (c) the straw is hot (d) air pushes it up
11. 11.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a sink or bucket (d) over a laptop
12. 12.🔍 Which is the odd one out? (a) a bicycle pump (b) a fridge magnet (c) a suction hook (d) a drinking straw
13. 13.True or false: a fridge magnet works by magnetism. (a) True (b) False
14. 14.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
15. 15.True or false: a magnetic chess set works by magnetism. (a) True (b) False
16. 16.🧺 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 glass of water (d) a stiff postcard
17. 17.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
18. 18.🥛 Which of these works by air pressure? (a) a suction hook (b) a fridge magnet (c) a magnetic pin holder (d) a compass needle
19. 19.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) a suction hook (b) a medicine dropper (c) a vacuum cleaner (d) a magnetic pin holder
21. 21.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a battery cell (d) a sink or a bucket
22. 22.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
23. 23.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
24. 24.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is what we measure. (a) True (b) False
25. 25.🧺 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 towel (c) a glass of water (d) a mirror
26. 26.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a vacuum cleaner (d) a magnetic pin holder
27. 27.⚖️ 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
28. 28.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) water is hiding there (c) the bottle is magnetic (d) air inside pushes back
29. 29.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to grow plants (c) to catch any spills (d) to make it rain
30. 30.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
31. 31.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
32. 32.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
33. 33.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
34. 34.🧺 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) turmeric powder
35. 35.🔍 Which is the odd one out? (a) a bicycle pump (b) a vacuum cleaner (c) a magnetic chess set (d) a medicine dropper
36. 36.🧺 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 towel (c) yeast (d) a glass of water
37. 37.🧺 Which of these is not needed for the card-on-a-glass trick? (a) turmeric powder (b) a sink or a bucket (c) a glass of water (d) a towel
38. 38.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) yeast (c) a towel (d) a stiff postcard
39. 39.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
40. 40.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) air pressure (c) sunlight (d) friction

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