Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 504 · 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 balloon is not needed for the card-on-a-glass trick. (a) True (b) False
2. 2.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
3. 3.⚖️ 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
4. 4.⚖️ 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
5. 5.True or false: a medicine dropper works by air pressure. (a) False (b) True
6. 6.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
7. 7.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) True (b) False
8. 8.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it is hotter (d) it will not break
9. 9.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) turmeric powder (c) a stiff postcard (d) yeast
10. 10.🧺 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 towel (c) yeast (d) a stiff postcard
11. 11.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
12. 12.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) water is hiding there (c) the cap is sticky (d) the bottle is magnetic
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) a glass of water (d) turmeric powder
14. 14.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
15. 15.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
16. 16.⚖️ 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 change it (b) we keep it the same (c) we measure it
17. 17.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) air pressure (c) magnetism (d) friction
18. 18.True or false: a drinking straw works by magnetism. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) a magnetic chess set (b) a vacuum cleaner (c) a fridge magnet (d) a magnetic pin holder
20. 20.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to make it rain (c) to catch any spills (d) to cool the glass
21. 21.True or false: a vacuum cleaner works by air pressure. (a) False (b) True
22. 22.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) air (d) water
23. 23.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
24. 24.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a towel (c) a balloon (d) a battery cell
25. 25.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
26. 26.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) over a laptop (c) on a bed (d) near a plug point
27. 27.True or false: a bicycle pump works by magnetism. (a) True (b) False
28. 28.🥛 Which of these works by magnetism? (a) a suction hook (b) a drinking straw (c) a vacuum cleaner (d) a magnetic chess set
29. 29.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a sink or a bucket (c) a balloon (d) turmeric powder
30. 30.⚖️ 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 keep it the same (c) we change it
31. 31.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a vacuum cleaner (c) a suction hook (d) a magnetic pin holder
32. 32.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a towel (c) a mirror (d) a glass of water
33. 33.⚖️ 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
34. 34.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a magnetic chess set (c) a medicine dropper (d) a compass needle
35. 35.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
36. 36.⚖️ 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) the same card (b) whether the card stays (c) how full the glass is
37. 37.🔍 Which is the odd one out? (a) a magnetic chess set (b) a vacuum cleaner (c) a drinking straw (d) a bicycle pump
38. 38.🔍 Which is the odd one out? (a) a compass needle (b) a medicine dropper (c) a drinking straw (d) a vacuum cleaner
39. 39.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) the cold water (c) air pushing up (d) glue on the card
40. 40.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure

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