Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 358 · 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.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
2. 2.True or false: a suction hook works by magnetism. (a) False (b) True
3. 3.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) air (d) sand
4. 4.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a sink or bucket (c) near a plug point (d) over a laptop
5. 5.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) the same card (b) how full the glass is (c) whether the card stays (d) the same glass
6. 6.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the cap is sticky (c) the bottle is magnetic (d) water is hiding there
7. 7.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) the straw is magnetic (c) juice likes plastic (d) the straw is hot
8. 8.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) magnetism (c) air pressure (d) friction
9. 9.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a fridge magnet (d) a medicine dropper
10. 10.⚖️ 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) False (b) True
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 way we turn it”? (a) we measure it (b) we change it (c) we keep it the same
12. 12.🧺 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 glass of water (d) a stiff postcard
13. 13.True or false: a compass needle works by magnetism. (a) False (b) True
14. 14.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
15. 15.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) turmeric powder (c) a glass of water (d) a stiff postcard
16. 16.True or false: a fridge magnet works by air pressure. (a) True (b) False
17. 17.🥛 Which of these works by air pressure? (a) a drinking straw (b) a magnetic chess set (c) a fridge magnet (d) a compass needle
18. 18.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
19. 19.🧺 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 mirror (d) a sink or a bucket
20. 20.⚖️ 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 same card (b) the way we turn it (c) whether the card stays (d) how full the glass is
21. 21.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the water turns to ice (c) the card flies away (d) the card stays on
22. 22.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
23. 23.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
24. 24.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a mirror (c) a stiff postcard (d) a glass of water
25. 25.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
26. 26.🔮 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
27. 27.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it will not break (d) it is hotter
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 kept the same. (a) True (b) False
29. 29.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a sink or a bucket (c) turmeric powder (d) a magnet
30. 30.🥛 Which of these works by magnetism? (a) a drinking straw (b) a suction hook (c) a bicycle pump (d) a magnetic chess set
31. 31.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a suction hook (c) a vacuum cleaner (d) a magnetic pin holder
32. 32.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
33. 33.🔍 Which is the odd one out? (a) a drinking straw (b) a suction hook (c) a magnetic pin holder (d) a bicycle pump
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 change it (c) we measure it
35. 35.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
36. 36.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
37. 37.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
38. 38.True or false: a bicycle pump works by magnetism. (a) True (b) False
39. 39.🧺 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 stiff postcard (d) a battery cell
40. 40.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False

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