Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 462 · 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.⚖️ 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 change it (b) we keep it the same (c) we measure it
2. 2.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) air inside pushes back (c) water is hiding there (d) the bottle is magnetic
3. 3.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a balloon (d) a glass of water
4. 4.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a towel (c) a balloon (d) a glass of water
5. 5.True or false: a bicycle pump works by air pressure. (a) False (b) True
6. 6.⚖️ 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 card (b) the same glass (c) the way we turn it (d) how full the glass is
7. 7.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
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.📘 Air presses on everything around us. What is this push called? (a) friction (b) magnetism (c) sunlight (d) air pressure
10. 10.True or false: a fridge magnet works by magnetism. (a) False (b) True
11. 11.⚖️ 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) the way we turn it (c) how full the glass is (d) whether the card stays
12. 12.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
13. 13.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic pin holder (c) a vacuum cleaner (d) a suction hook
14. 14.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
15. 15.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic chess set (c) a fridge magnet (d) a drinking straw
16. 16.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to catch any spills (c) to grow plants (d) to make it rain
17. 17.🛟 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
18. 18.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
19. 19.⚖️ 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 keep it the same (c) we change it
20. 20.🔍 Which is the odd one out? (a) a suction hook (b) a medicine dropper (c) a compass needle (d) a vacuum cleaner
21. 21.True or false: a bicycle pump works by magnetism. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) a magnetic chess set (b) a suction hook (c) a drinking straw (d) a bicycle pump
23. 23.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) True (b) False
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) False (b) True
25. 25.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a suction hook (d) a magnetic pin holder
26. 26.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) air (c) sand (d) water
27. 27.🧺 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) yeast (d) a stiff postcard
28. 28.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
29. 29.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
30. 30.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) a magnet (c) a battery cell (d) yeast
31. 31.⚖️ 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
32. 32.True or false: a fridge magnet works by air pressure. (a) False (b) True
33. 33.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
34. 34.🧺 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 magnet (d) a stiff postcard
35. 35.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) on a bed (d) near a plug point
36. 36.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
37. 37.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a battery cell (d) a towel
38. 38.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a battery cell (d) a sink or a bucket
39. 39.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) a medicine dropper (b) a fridge magnet (c) a magnetic chess set (d) a magnetic pin holder

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