Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 567 · 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.⚖️ 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
2. 2.True or false: a magnetic chess set works by magnetism. (a) False (b) True
3. 3.🧺 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 sink or a bucket (d) turmeric powder
4. 4.🧺 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 mirror (c) a towel (d) a stiff postcard
5. 5.True or false: a bicycle pump works by air pressure. (a) False (b) True
6. 6.⚖️ 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
7. 7.⚖️ 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
8. 8.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) smoke (c) sand (d) air
9. 9.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
10. 10.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a suction hook (d) a fridge magnet
11. 11.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) air pushes it up (c) the straw is magnetic (d) the straw is hot
12. 12.⚖️ 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 keep it the same (b) we change it (c) we measure it
13. 13.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
14. 14.🥛 Which of these works by magnetism? (a) a suction hook (b) a compass needle (c) a bicycle pump (d) a vacuum cleaner
15. 15.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is magnetic (c) it is heavier (d) it will not break
16. 16.🧺 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 towel (d) a balloon
17. 17.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
18. 18.⚖️ 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 what we measure. (a) True (b) False
19. 19.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
20. 20.⚖️ 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
21. 21.True or false: a bicycle pump works by magnetism. (a) True (b) False
22. 22.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a balloon (c) a sink or a bucket (d) a stiff postcard
23. 23.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a sink or bucket (c) over a laptop (d) near a plug point
24. 24.⚖️ 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) the same card (c) the same glass (d) the way we turn it
25. 25.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a medicine dropper (c) a magnetic chess set (d) a magnetic pin holder
26. 26.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) turmeric powder (c) a magnet (d) yeast
27. 27.🔍 Which is the odd one out? (a) a suction hook (b) a fridge magnet (c) a magnetic pin holder (d) a compass needle
28. 28.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
29. 29.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
30. 30.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
31. 31.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
32. 32.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
33. 33.⚖️ 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 way we turn it
34. 34.🔍 Which is the odd one out? (a) a fridge magnet (b) a drinking straw (c) a suction hook (d) a vacuum cleaner
35. 35.🔍 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 card flies away (d) the water turns to ice
36. 36.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) a compass needle (b) a suction hook (c) a medicine dropper (d) a bicycle pump
38. 38.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) True (b) False
39. 39.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to cool the glass (c) to grow plants (d) to catch any spills
40. 40.🥛 Which of these works by magnetism? (a) a drinking straw (b) a suction hook (c) a bicycle pump (d) a magnetic chess set

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