Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 65 · 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.🔍 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 water turns to ice (c) the glass breaks (d) the card stays on
2. 2.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
3. 3.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
4. 4.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
5. 5.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it will not break (d) it is heavier
6. 6.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a vacuum cleaner (d) a magnetic pin holder
7. 7.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a magnet (d) a towel
8. 8.🧺 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) yeast (d) a stiff postcard
9. 9.⚖️ 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 what we measure. (a) True (b) False
10. 10.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a stiff postcard (c) a glass of water (d) a sink or a bucket
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 way we turn it”? (a) we change it (b) we keep it the same (c) we measure it
12. 12.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
13. 13.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) turmeric powder (c) a magnet (d) a glass of water
14. 14.⚖️ 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 measure it (b) we change it (c) we keep it the same
15. 15.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
16. 16.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) air (c) sand (d) smoke
17. 17.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
18. 18.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) a magnet (c) the cold water (d) glue on the card
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) the same glass (b) whether the card stays (c) how full the glass is
20. 20.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a battery cell (c) a balloon (d) a towel
21. 21.True or false: a fridge magnet works by magnetism. (a) False (b) True
22. 22.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) near a plug point (c) over a laptop (d) on a bed
23. 23.⚖️ 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 way we turn it
24. 24.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
25. 25.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
26. 26.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
27. 27.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a stiff postcard (c) turmeric powder (d) a mirror
28. 28.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) a balloon (d) a glass of water
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) water is hiding there (c) air inside pushes back (d) the cap is sticky
30. 30.⚖️ 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 measure it (b) we change it (c) we keep it the same
31. 31.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) air pressure (c) friction (d) magnetism
32. 32.⚖️ 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
33. 33.⚖️ 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
34. 34.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) turmeric powder (c) a glass of water (d) a stiff postcard
35. 35.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a drinking straw (c) a compass needle (d) a suction hook
36. 36.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
37. 37.🥛 Which of these works by magnetism? (a) a suction hook (b) a drinking straw (c) a magnetic pin holder (d) a medicine dropper
38. 38.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
39. 39.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
40. 40.True or false: a bicycle pump works by magnetism. (a) True (b) False

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