Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 177 · 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 glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a medicine dropper (c) a drinking straw (d) a magnetic chess set
3. 3.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) friction (c) sunlight (d) magnetism
4. 4.⚖️ 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) True (b) False
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 glass”? (a) we keep it the same (b) we measure it (c) we change it
6. 6.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) yeast (c) a battery cell (d) a magnet
7. 7.True or false: a compass needle works by air pressure. (a) True (b) False
8. 8.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
9. 9.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
10. 10.⚖️ 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
11. 11.⚖️ 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) whether the card stays (b) the same card (c) how full the glass is (d) the same glass
12. 12.🥛 Which of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a magnetic chess set (d) a suction hook
13. 13.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a stiff postcard (c) a balloon (d) a glass of water
14. 14.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) glue on the card (c) a magnet (d) the cold water
15. 15.⚖️ 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 measure it (b) we keep it the same (c) we change it
16. 16.🧺 Which of these is needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a magnet (c) yeast (d) a balloon
17. 17.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) air pushes it up (c) juice likes plastic (d) the straw is hot
18. 18.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
19. 19.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) turmeric powder (d) a glass of water
20. 20.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a suction hook (c) a bicycle pump (d) a medicine dropper
21. 21.⚖️ 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
22. 22.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a compass needle (c) a vacuum cleaner (d) a fridge magnet
23. 23.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
24. 24.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) water is hiding there (c) air inside pushes back (d) the bottle is magnetic
25. 25.⚖️ 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
26. 26.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a sink or a bucket (d) a mirror
27. 27.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
28. 28.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
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) yeast (c) a glass of water (d) a towel
30. 30.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
31. 31.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
32. 32.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
33. 33.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to cool the glass (c) to catch any spills (d) to make it rain
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) a battery cell (c) a towel (d) a stiff postcard
35. 35.⚖️ 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 keep it the same (b) we measure it (c) we change it
36. 36.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a sink or a bucket (d) a balloon
37. 37.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic chess set (c) a suction hook (d) a fridge magnet
38. 38.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
39. 39.True or false: a drinking straw works by air pressure. (a) True (b) False
40. 40.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True

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