Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 843 · 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 magnetism. (a) False (b) True
2. 2.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a compass needle (d) a medicine dropper
3. 3.⚖️ 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 glass (c) the way we turn it (d) the same card
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 same glass (b) the way we turn it (c) whether the card stays (d) the same card
5. 5.True or false: a bicycle pump works by magnetism. (a) False (b) True
6. 6.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) a glass of water (d) a battery cell
7. 7.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a balloon (d) a sink or a bucket
8. 8.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
9. 9.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a glass of water (d) a mirror
10. 10.🔮 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
11. 11.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a sink or a bucket (d) a magnet
12. 12.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
13. 13.🔍 Which is the odd one out? (a) a bicycle pump (b) a fridge magnet (c) a magnetic chess set (d) a compass needle
14. 14.🥛 Which of these works by magnetism? (a) a suction hook (b) a magnetic chess set (c) a vacuum cleaner (d) a medicine dropper
15. 15.True or false: a medicine dropper works by magnetism. (a) True (b) False
16. 16.⚖️ 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
17. 17.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
18. 18.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is magnetic (d) it is hotter
19. 19.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a suction hook (c) a compass needle (d) a fridge magnet
20. 20.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a compass needle (d) a suction hook
21. 21.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to catch any spills (c) to make it rain (d) to grow plants
22. 22.🧺 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 towel (d) a stiff postcard
23. 23.⚖️ 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) False (b) True
24. 24.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) a towel (d) turmeric powder
25. 25.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
26. 26.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) sunlight (c) friction (d) magnetism
27. 27.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
28. 28.🔍 Which is the odd one out? (a) a magnetic chess set (b) a bicycle pump (c) a drinking straw (d) a suction hook
29. 29.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
30. 30.True or false: a magnet is not needed for the card-on-a-glass trick. (a) True (b) False
31. 31.True or false: a vacuum cleaner works by air pressure. (a) False (b) True
32. 32.⚖️ 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 what we measure. (a) True (b) False
33. 33.True or false: a fridge magnet works by air pressure. (a) True (b) False
34. 34.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
35. 35.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) on a bed (d) over a sink or bucket
36. 36.True or false: a suction hook works by magnetism. (a) False (b) True
37. 37.True or false: a suction hook works by air pressure. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic chess set (c) a fridge magnet (d) a medicine dropper
39. 39.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a drinking straw (c) a bicycle pump (d) a fridge magnet
40. 40.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False

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