Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 413 · 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.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
2. 2.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a vacuum cleaner (d) a compass needle
3. 3.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
4. 4.🥛 Which of these works by magnetism? (a) a drinking straw (b) a medicine dropper (c) a vacuum cleaner (d) a magnetic chess set
5. 5.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
6. 6.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a stiff postcard (c) a glass of water (d) a sink or a bucket
7. 7.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) turmeric powder (c) a magnet (d) yeast
8. 8.⚖️ 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
9. 9.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
10. 10.🧺 Which of these is not needed for the card-on-a-glass trick? (a) yeast (b) a stiff postcard (c) a glass of water (d) a towel
11. 11.True or false: a medicine dropper works by air pressure. (a) True (b) False
12. 12.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a mirror (c) yeast (d) a sink or a bucket
13. 13.⚖️ 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 measure it (b) we change it (c) we keep it the same
14. 14.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a compass needle (d) a suction hook
15. 15.🔮 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
16. 16.⚖️ 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 same glass (b) how full the glass is (c) the way we turn it (d) whether the card stays
17. 17.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
18. 18.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
19. 19.🔍 Which is the odd one out? (a) a drinking straw (b) a compass needle (c) a magnetic chess set (d) a fridge magnet
20. 20.⚖️ 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
21. 21.⚖️ 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) the same glass (c) how full the glass is
22. 22.True or false: a drinking straw works by magnetism. (a) True (b) False
23. 23.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
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 the one thing we change. (a) False (b) True
25. 25.True or false: a bicycle pump works by air pressure. (a) False (b) True
26. 26.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
27. 27.⚖️ 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 way we turn it
28. 28.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) sunlight (c) air pressure (d) friction
29. 29.🥤 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
30. 30.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
31. 31.True or false: a compass needle works by air pressure. (a) True (b) False
32. 32.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is hotter (c) it will not break (d) it is magnetic
33. 33.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) a stiff postcard (d) a mirror
34. 34.🧺 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) a sink or a bucket (d) yeast
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) True (b) False
36. 36.🔍 Which is the odd one out? (a) a medicine dropper (b) a magnetic chess set (c) a fridge magnet (d) a compass needle
37. 37.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a sink or a bucket (c) a towel (d) a stiff postcard
38. 38.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) near a plug point (c) on a bed (d) over a laptop
39. 39.True or false: a fridge magnet works by magnetism. (a) True (b) False
40. 40.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure

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