Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 986 · 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.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a magnet (c) a towel (d) a sink or a bucket
2. 2.🧺 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) a magnet (d) a glass of water
3. 3.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
4. 4.⚖️ 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 glass (c) the same card (d) whether the card stays
5. 5.🧺 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) turmeric powder
6. 6.🧺 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 mirror (c) a glass of water (d) a stiff postcard
7. 7.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
8. 8.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
9. 9.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a battery cell (d) a sink or a bucket
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 measure it (b) we change it (c) we keep it the same
11. 11.⚖️ 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
12. 12.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
13. 13.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
14. 14.🧺 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 glass of water (d) yeast
15. 15.⚖️ 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
16. 16.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) on a bed (d) over a sink or bucket
17. 17.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) air pushing up (c) a magnet (d) glue on the card
18. 18.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
19. 19.⚖️ 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 the one thing we change. (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: how full the glass is is kept the same. (a) False (b) True
21. 21.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a mirror (c) turmeric powder (d) a towel
22. 22.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a magnetic pin holder (c) a suction hook (d) a medicine dropper
23. 23.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a mirror (c) a magnet (d) a glass of water
24. 24.⚖️ 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 same card
25. 25.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a drinking straw (c) a medicine dropper (d) a compass needle
26. 26.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
27. 27.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.True or false: a fridge magnet works by air pressure. (a) True (b) False
29. 29.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to make it rain (c) to grow plants (d) to catch any spills
30. 30.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a mirror (c) a balloon (d) a stiff postcard
31. 31.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
32. 32.⚖️ 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
33. 33.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) the cap is sticky (c) air inside pushes back (d) water is hiding there
34. 34.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) sand (c) air (d) smoke
35. 35.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a magnetic pin holder (d) a drinking straw
36. 36.🧺 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 stiff postcard (d) yeast
37. 37.🔍 Which is the odd one out? (a) a compass needle (b) a medicine dropper (c) a magnetic pin holder (d) a magnetic chess set
38. 38.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
39. 39.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
40. 40.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed

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