Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 485 · 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 battery cell is needed for the card-on-a-glass trick. (a) False (b) True
2. 2.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a sink or a bucket (c) a glass of water (d) a towel
3. 3.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) air pushing up (c) glue on the card (d) the cold water
4. 4.🔮 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) water is hiding there (d) air inside pushes back
5. 5.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) friction (c) air pressure (d) sunlight
6. 6.⚖️ 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 card (b) the way we turn it (c) the same glass (d) whether the card stays
7. 7.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
8. 8.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) turmeric powder (c) a mirror (d) a balloon
9. 9.⚖️ 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) True (b) False
10. 10.True or false: a suction hook works by magnetism. (a) True (b) False
11. 11.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the glass breaks (c) the card flies away (d) the card stays on
12. 12.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
13. 13.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
14. 14.🧺 Do we need a glass of water 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? True or false: the way we turn it is kept the same. (a) True (b) False
16. 16.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
17. 17.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
18. 18.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
20. 20.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
21. 21.True or false: a suction hook works by air pressure. (a) False (b) True
22. 22.🥛 Which of these works by magnetism? (a) a magnetic pin holder (b) a medicine dropper (c) a suction hook (d) a drinking straw
23. 23.⚖️ 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 change it (c) we keep it the same
24. 24.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a sink or bucket (d) over a laptop
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 keep it the same (b) we measure it (c) we change it
26. 26.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
27. 27.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
28. 28.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is kept the same. (a) False (b) True
29. 29.⚖️ 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
30. 30.⚖️ 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) the same glass (b) the same card (c) the way we turn it (d) how full the glass is
31. 31.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
32. 32.⚖️ 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
33. 33.🔍 Which is the odd one out? (a) a magnetic chess set (b) a suction hook (c) a bicycle pump (d) a medicine dropper
34. 34.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a magnet (b) a glass of water (c) a stiff postcard (d) a towel
35. 35.True or false: a compass needle works by air pressure. (a) True (b) False
36. 36.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a towel (c) a stiff postcard (d) a sink or a bucket
37. 37.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
38. 38.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) yeast (d) a sink or a bucket
39. 39.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) yeast (d) a glass of water
40. 40.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a battery cell (c) a glass of water (d) a sink or a bucket

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