Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 60 · 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? What do we do with “the same glass”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is magnetic (c) it is heavier (d) it is hotter
3. 3.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a magnetic chess set (d) a suction hook
4. 4.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
5. 5.⚖️ 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) False (b) True
6. 6.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic pin holder (c) a compass needle (d) a bicycle pump
7. 7.⚖️ 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
8. 8.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
9. 9.🔮 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
10. 10.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
11. 11.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is hot (c) the straw is magnetic (d) air pushes it up
12. 12.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) yeast (c) a towel (d) a mirror
13. 13.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
14. 14.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
15. 15.⚖️ 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 keep it the same (c) we measure it
16. 16.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
17. 17.⚖️ 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) the same card (c) how full the glass is (d) whether the card stays
18. 18.True or false: a fridge magnet works by air pressure. (a) False (b) True
19. 19.True or false: a magnetic chess set works by air pressure. (a) True (b) False
20. 20.🧺 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 stiff postcard (d) a glass of water
21. 21.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) False (b) True
22. 22.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
23. 23.🧺 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
24. 24.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) the cold water (c) air pushing up (d) a magnet
25. 25.🔍 Which is the odd one out? (a) a suction hook (b) a magnetic chess set (c) a medicine dropper (d) a vacuum cleaner
26. 26.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) a fridge magnet (b) a vacuum cleaner (c) a medicine dropper (d) a drinking straw
28. 28.True or false: a magnet is not needed for the card-on-a-glass trick. (a) True (b) False
29. 29.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) magnetism (c) friction (d) air pressure
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 change it (b) we measure it (c) we keep it the same
31. 31.⚖️ 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 card (c) whether the card stays
32. 32.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
33. 33.🧺 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 magnet (d) a towel
34. 34.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
35. 35.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to cool the glass (c) to grow plants (d) to make it rain
36. 36.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) a stiff postcard (d) a towel
37. 37.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a drinking straw (c) a vacuum cleaner (d) a magnetic pin holder
38. 38.⚖️ 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
39. 39.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a sink or a bucket (d) yeast
40. 40.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False

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