Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 610 · 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.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) a balloon (c) a battery cell (d) yeast
2. 2.⚖️ 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) whether the card stays (c) the same card
3. 3.🧺 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 stiff postcard (d) a sink or a bucket
4. 4.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a suction hook (c) a vacuum cleaner (d) a bicycle pump
5. 5.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) over a laptop (c) near a plug point (d) on a bed
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 same glass (b) the same card (c) whether the card stays (d) how full the glass is
7. 7.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
8. 8.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a magnetic chess set (c) a fridge magnet (d) a compass needle
9. 9.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) turmeric powder (c) a sink or a bucket (d) a glass of water
10. 10.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
11. 11.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a stiff postcard (d) yeast
12. 12.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
13. 13.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
14. 14.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a medicine dropper (d) a compass needle
15. 15.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) turmeric powder (c) a balloon (d) a glass of water
16. 16.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False
17. 17.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
18. 18.⚖️ 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
19. 19.True or false: a compass needle works by air pressure. (a) False (b) True
20. 20.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
21. 21.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
22. 22.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
23. 23.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
24. 24.⚖️ 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 same glass (c) whether the card stays (d) the way we turn it
25. 25.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
26. 26.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
27. 27.🧺 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 stiff postcard
28. 28.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is heavier (c) it will not break (d) it is magnetic
29. 29.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) air pressure (c) friction (d) magnetism
30. 30.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
31. 31.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) smoke (c) water (d) air
32. 32.True or false: a bicycle pump works by magnetism. (a) True (b) False
33. 33.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) a mirror (c) a battery cell (d) turmeric powder
34. 34.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) it looks nicer (c) little air left inside (d) the card gets wet
35. 35.🔍 Which is the odd one out? (a) a medicine dropper (b) a compass needle (c) a fridge magnet (d) a magnetic chess set
36. 36.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is hot (c) the straw is magnetic (d) air pushes it up
37. 37.True or false: a suction hook works by air pressure. (a) False (b) True
38. 38.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) the cold water (c) a magnet (d) glue on the card
39. 39.🔍 Which is the odd one out? (a) a magnetic chess set (b) a drinking straw (c) a fridge magnet (d) a magnetic pin holder
40. 40.⚖️ 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

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