Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 108 · 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 a towel for the card-on-a-glass trick? (a) not needed (b) needed
2. 2.⚖️ 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
3. 3.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
4. 4.True or false: a drinking straw works by magnetism. (a) True (b) False
5. 5.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) near a plug point (d) over a sink or bucket
6. 6.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) how full the glass is (b) the same glass (c) whether the card stays
7. 7.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
8. 8.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) magnetism (c) sunlight (d) friction
9. 9.True or false: a vacuum cleaner works by air pressure. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a medicine dropper (c) a suction hook (d) a bicycle pump
11. 11.🔮 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
12. 12.⚖️ 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) whether the card stays (c) the same card (d) the same glass
13. 13.🔍 Which is the odd one out? (a) a suction hook (b) a magnetic pin holder (c) a compass needle (d) a fridge magnet
14. 14.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
15. 15.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we change it (b) we keep it the same (c) we measure it
16. 16.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) juice likes plastic (c) air pushes it up (d) the straw is hot
17. 17.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a balloon (d) a glass of water
18. 18.🥛 Which of these works by air pressure? (a) a compass needle (b) a suction hook (c) a magnetic pin holder (d) a magnetic chess set
19. 19.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a mirror (c) a glass of water (d) a stiff postcard
20. 20.⚖️ 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) the way we turn it (c) the same glass (d) whether the card stays
21. 21.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to make it rain (c) to cool the glass (d) to catch any spills
22. 22.🧺 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 stiff postcard (c) a battery cell (d) a glass of water
23. 23.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a drinking straw (c) a suction hook (d) a compass needle
24. 24.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) water is heavier (c) little air left inside (d) the card gets wet
25. 25.🔍 Which is the odd one out? (a) a magnetic chess set (b) a bicycle pump (c) a medicine dropper (d) a suction hook
26. 26.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a magnet (c) a towel (d) a mirror
27. 27.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
28. 28.⚖️ 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 change it (c) we keep it the same
29. 29.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card stays on (c) the water turns to ice (d) the card flies away
30. 30.⚖️ 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
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 glass of water (c) a magnet (d) a sink or a bucket
32. 32.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
33. 33.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
34. 34.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
35. 35.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a bicycle pump (c) a compass needle (d) a magnetic pin holder
36. 36.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
37. 37.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
38. 38.⚖️ 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
39. 39.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
40. 40.⚖️ 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) False (b) True

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