Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 624 · 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.True or false: a magnetic chess set works by air pressure. (a) True (b) False
2. 2.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
3. 3.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a magnetic chess set (c) a drinking straw (d) a bicycle pump
4. 4.🔍 Which is the odd one out? (a) a bicycle pump (b) a fridge magnet (c) a suction hook (d) a medicine dropper
5. 5.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
6. 6.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
7. 7.🔮 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
8. 8.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
9. 9.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
10. 10.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a fridge magnet (d) a bicycle pump
11. 11.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a magnet (d) a glass of water
12. 12.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a fridge magnet (d) a medicine dropper
13. 13.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) True (b) False
14. 14.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
15. 15.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a drinking straw (c) a medicine dropper (d) a fridge magnet
16. 16.⚖️ 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
17. 17.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) over a sink or bucket (d) on a bed
18. 18.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) glue on the card (c) air pushing up (d) a magnet
19. 19.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a compass needle (c) a suction hook (d) a bicycle pump
20. 20.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) turmeric powder (c) a balloon (d) a glass of water
21. 21.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
22. 22.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
23. 23.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
24. 24.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) friction (c) sunlight (d) air pressure
25. 25.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a towel (c) a glass of water (d) yeast
26. 26.⚖️ 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) True (b) False
27. 27.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
28. 28.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a mirror (b) a stiff postcard (c) a towel (d) a glass of water
29. 29.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
30. 30.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is hotter (c) it is magnetic (d) it is heavier
31. 31.True or false: a suction hook works by air pressure. (a) False (b) True
32. 32.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a towel (c) a stiff postcard (d) a balloon
33. 33.⚖️ 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 measure it (b) we keep it the same (c) we change it
34. 34.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) water (d) air
35. 35.True or false: a fridge magnet works by magnetism. (a) True (b) False
36. 36.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) juice likes plastic (c) the straw is hot (d) air pushes it up
37. 37.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a battery cell (c) a stiff postcard (d) a balloon
38. 38.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
39. 39.🧺 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 towel
40. 40.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) a towel (d) a stiff postcard

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