Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 114 · 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? True or false: the same card is kept the same. (a) False (b) True
2. 2.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) friction (c) air pressure (d) sunlight
3. 3.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) True (b) False
4. 4.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
5. 5.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it will not break (c) it is heavier (d) it is hotter
6. 6.⚖️ 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 same card (b) the same glass (c) whether the card stays (d) how full the glass is
7. 7.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) air inside pushes back (c) water is hiding there (d) the cap is sticky
8. 8.🥛 Which of these works by air pressure? (a) a drinking straw (b) a magnetic chess set (c) a magnetic pin holder (d) a fridge magnet
9. 9.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a vacuum cleaner (c) a magnetic pin holder (d) a fridge magnet
10. 10.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a compass needle (c) a magnetic pin holder (d) a fridge magnet
11. 11.⚖️ 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 change it (b) we keep it the same (c) we measure it
12. 12.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a magnetic pin holder (c) a suction hook (d) a medicine dropper
13. 13.True or false: a medicine dropper works by magnetism. (a) False (b) True
14. 14.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a suction hook (c) a fridge magnet (d) a compass needle
15. 15.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a stiff postcard (c) a sink or a bucket (d) a towel
16. 16.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
17. 17.⚖️ 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 change it (b) we keep it the same (c) we measure it
18. 18.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
19. 19.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we change it (b) we measure it (c) we keep it the same
20. 20.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) a glass of water (d) a mirror
21. 21.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a medicine dropper (d) a fridge magnet
22. 22.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
23. 23.🥛 Which of these works by magnetism? (a) a drinking straw (b) a suction hook (c) a magnetic chess set (d) a medicine dropper
24. 24.True or false: a compass needle works by magnetism. (a) False (b) True
25. 25.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a sink or a bucket (c) a glass of water (d) a towel
26. 26.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the glass breaks (c) the water turns to ice (d) the card stays on
27. 27.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
28. 28.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
29. 29.🧺 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 stiff postcard (c) a balloon (d) a towel
30. 30.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic pin holder (c) a suction hook (d) a compass needle
31. 31.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) a drinking straw (b) a fridge magnet (c) a vacuum cleaner (d) a bicycle pump
33. 33.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
34. 34.⚖️ 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 same glass (c) whether the card stays
35. 35.⚖️ 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 kept the same. (a) False (b) True
36. 36.⚖️ 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 change it (b) we keep it the same (c) we measure it
37. 37.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) yeast (c) turmeric powder (d) a stiff postcard
38. 38.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
39. 39.⚖️ 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
40. 40.⚖️ 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) False (b) True

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