Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 190 · 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.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) the card gets wet (c) water is heavier (d) it looks nicer
2. 2.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a compass needle (c) a magnetic chess set (d) a magnetic pin holder
3. 3.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a fridge magnet (c) a vacuum cleaner (d) a suction hook
4. 4.⚖️ 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 kept the same. (a) True (b) False
5. 5.🥛 Which of these works by air pressure? (a) a drinking straw (b) a magnetic chess set (c) a fridge magnet (d) a magnetic pin holder
6. 6.🔍 Which is the odd one out? (a) a compass needle (b) a suction hook (c) a fridge magnet (d) a magnetic pin holder
7. 7.⚖️ 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
8. 8.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) sunlight (c) friction (d) air pressure
9. 9.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
10. 10.🛟 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
11. 11.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the glass breaks (c) the card stays on (d) the water turns to ice
12. 12.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
13. 13.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) water (c) air (d) smoke
14. 14.⚖️ 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) whether the card stays (b) the way we turn it (c) the same card (d) how full the glass is
15. 15.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the bottle is magnetic (c) the cap is sticky (d) water is hiding there
16. 16.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
17. 17.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is magnetic (c) the straw is hot (d) air pushes it up
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) a towel (c) a sink or a bucket (d) a battery cell
19. 19.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
20. 20.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) turmeric powder (c) yeast (d) a stiff postcard
21. 21.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is magnetic (d) it is hotter
22. 22.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a mirror (c) a glass of water (d) a towel
23. 23.⚖️ 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 keep it the same (c) we measure it
24. 24.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to cool the glass (c) to make it rain (d) to grow plants
25. 25.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
26. 26.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a mirror (c) a glass of water (d) turmeric powder
27. 27.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a magnet (c) a towel (d) a sink or a bucket
29. 29.True or false: a medicine dropper works by magnetism. (a) False (b) True
30. 30.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) turmeric powder (c) a sink or a bucket (d) a towel
31. 31.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
32. 32.True or false: a suction hook works by magnetism. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a bicycle pump (c) a drinking straw (d) a magnetic chess set
34. 34.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
35. 35.🧺 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 balloon (c) a stiff postcard (d) a glass of water
36. 36.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
37. 37.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
38. 38.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
39. 39.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a suction hook (d) a magnetic chess set
40. 40.⚖️ 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

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