Air Pressure Experiment Worksheet

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

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