Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 967 · 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.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) on a bed (c) near a plug point (d) over a sink or bucket
2. 2.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a compass needle (d) a bicycle pump
3. 3.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
4. 4.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
5. 5.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
6. 6.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
7. 7.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
8. 8.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
9. 9.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
10. 10.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) magnetism (c) friction (d) air pressure
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 same glass”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) turmeric powder (d) a glass of water
13. 13.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a medicine dropper (d) a magnetic pin holder
14. 14.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a mirror (c) a towel (d) a magnet
15. 15.🧺 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 balloon (d) a stiff postcard
16. 16.🧺 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 balloon
17. 17.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
18. 18.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
19. 19.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
20. 20.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
21. 21.🔍 Which is the odd one out? (a) a compass needle (b) a suction hook (c) a bicycle pump (d) a drinking straw
22. 22.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) the straw is hot (c) juice likes plastic (d) air pushes it up
23. 23.⚖️ 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) how full the glass is (b) the same glass (c) whether the card stays (d) the same card
24. 24.⚖️ 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) whether the card stays (b) how full the glass is (c) the same card
25. 25.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
26. 26.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a vacuum cleaner (c) a drinking straw (d) a suction hook
27. 27.⚖️ 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) whether the card stays (c) the way we turn it (d) how full the glass is
28. 28.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) air pushing up (c) glue on the card (d) a magnet
29. 29.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
30. 30.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
31. 31.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a compass needle (c) a fridge magnet (d) a magnetic pin holder
32. 32.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is magnetic (c) it will not break (d) it is heavier
33. 33.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
34. 34.🔍 Which is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a magnetic pin holder (d) a bicycle pump
35. 35.🧺 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 battery cell (d) a sink or a bucket
36. 36.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) the bottle is magnetic (c) air inside pushes back (d) water is hiding there
37. 37.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to grow plants (c) to cool the glass (d) to catch any spills
38. 38.True or false: a suction hook works by magnetism. (a) False (b) True
39. 39.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is the one thing we change. (a) True (b) False
40. 40.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a mirror (c) a stiff postcard (d) a balloon

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