Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 511 · 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) near a plug point (b) on a bed (c) over a sink or bucket (d) over a laptop
2. 2.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) a glass of water (d) a mirror
3. 3.True or false: a magnet is not needed for the card-on-a-glass trick. (a) True (b) False
4. 4.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a mirror (c) a sink or a bucket (d) a magnet
5. 5.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
6. 6.🛟 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
7. 7.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a compass needle (d) a medicine dropper
8. 8.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to cool the glass (c) to catch any spills (d) to make it rain
9. 9.True or false: a medicine dropper works by magnetism. (a) False (b) True
10. 10.🧺 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 magnet
11. 11.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) the straw is hot (c) juice likes plastic (d) the straw is magnetic
12. 12.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) yeast (c) a battery cell (d) a glass of water
13. 13.🥛 Does a suction hook 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 magnetic chess set (c) a fridge magnet (d) a compass needle
15. 15.⚖️ 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) True (b) False
16. 16.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) friction (c) air pressure (d) sunlight
17. 17.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
18. 18.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a suction hook (c) a magnetic chess set (d) a magnetic pin holder
19. 19.⚖️ 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) the same card (c) how full the glass is
20. 20.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
21. 21.🧺 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 battery cell (c) a towel (d) a stiff postcard
22. 22.⚖️ 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 way we turn it (c) whether the card stays
23. 23.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
24. 24.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
25. 25.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
26. 26.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
27. 27.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
28. 28.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a fridge magnet (c) a drinking straw (d) a bicycle pump
29. 29.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) the cap is sticky (c) air inside pushes back (d) water is hiding there
30. 30.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
31. 31.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is kept the same. (a) True (b) False
32. 32.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
33. 33.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
34. 34.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a vacuum cleaner (d) a compass needle
35. 35.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) air pushing up (c) glue on the card (d) the cold water
36. 36.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
37. 37.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
38. 38.⚖️ 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
39. 39.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) a drinking straw (b) a fridge magnet (c) a suction hook (d) a bicycle pump

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