Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 684 · 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.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
2. 2.⚖️ 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
3. 3.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
4. 4.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a fridge magnet (d) a vacuum cleaner
5. 5.⚖️ 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) whether the card stays (c) the same card (d) the way we turn it
6. 6.🧺 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) yeast
7. 7.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a mirror (c) a towel (d) a glass of water
8. 8.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) air inside pushes back (c) the bottle is magnetic (d) the cap is sticky
9. 9.🧺 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 glass of water (c) a magnet (d) a stiff postcard
10. 10.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) water (c) smoke (d) air
11. 11.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) yeast (d) a glass of water
12. 12.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
13. 13.⚖️ 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 change it (c) we measure it
14. 14.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
15. 15.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) a magnetic chess set (b) a suction hook (c) a compass needle (d) a fridge magnet
17. 17.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
18. 18.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.True or false: a magnetic chess set works by magnetism. (a) False (b) True
20. 20.⚖️ 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
21. 21.🔍 Which is the odd one out? (a) a fridge magnet (b) a medicine dropper (c) a magnetic pin holder (d) a compass needle
22. 22.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) turmeric powder (c) a glass of water (d) a magnet
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) whether the card stays (b) how full the glass is (c) the same card
24. 24.⚖️ 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
25. 25.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
26. 26.⚖️ 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
27. 27.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) juice likes plastic (c) the straw is hot (d) the straw is magnetic
28. 28.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a drinking straw (d) a magnetic chess set
29. 29.⚖️ 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 the one thing we change. (a) True (b) False
30. 30.True or false: a compass needle works by air pressure. (a) False (b) True
31. 31.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a towel (c) a stiff postcard (d) a sink or a bucket
32. 32.True or false: a balloon is not needed for the card-on-a-glass trick. (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 what we measure? (a) whether the card stays (b) how full the glass is (c) the same glass (d) the way we turn it
34. 34.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
35. 35.🔍 Which is the odd one out? (a) a drinking straw (b) a suction hook (c) a compass needle (d) a bicycle pump
36. 36.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a stiff postcard (c) a battery cell (d) a mirror
37. 37.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a suction hook (c) a fridge magnet (d) a drinking straw
38. 38.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
39. 39.⚖️ 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 kept the same. (a) False (b) True
40. 40.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a stiff postcard (c) a sink or a bucket (d) a towel

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