Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 216 · 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? True or false: the same glass is the one thing we change. (a) True (b) False
2. 2.🛟 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
3. 3.📘 Air presses on everything around us. What is this push called? (a) friction (b) sunlight (c) air pressure (d) magnetism
4. 4.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) near a plug point (c) over a laptop (d) over a sink or bucket
5. 5.🧺 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 towel (d) a mirror
6. 6.🥛 Which of these works by magnetism? (a) a magnetic pin holder (b) a suction hook (c) a medicine dropper (d) a drinking straw
7. 7.⚖️ 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
8. 8.🧺 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 battery cell (c) a stiff postcard (d) a glass of water
9. 9.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) turmeric powder (c) a stiff postcard (d) yeast
10. 10.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a magnetic chess set (c) a compass needle (d) a fridge magnet
11. 11.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
12. 12.⚖️ 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 measure it (b) we keep it the same (c) we change it
13. 13.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a drinking straw (c) a fridge magnet (d) a magnetic chess set
14. 14.True or false: a suction hook works by magnetism. (a) False (b) True
15. 15.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
16. 16.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
17. 17.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
18. 18.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
19. 19.🧺 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 stiff postcard (d) a magnet
20. 20.🔮 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) the bottle is magnetic (d) water is hiding there
21. 21.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to cool the glass (c) to make it rain (d) to grow plants
22. 22.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
23. 23.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
24. 24.⚖️ 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) whether the card stays (b) how full the glass is (c) the way we turn it (d) the same glass
25. 25.⚖️ 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 keep it the same (c) we change it
26. 26.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
27. 27.🔍 Which is the odd one out? (a) a magnetic chess set (b) a drinking straw (c) a vacuum cleaner (d) a bicycle pump
28. 28.⚖️ 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 way we turn it (b) the same card (c) whether the card stays (d) how full the glass is
29. 29.True or false: a medicine dropper works by magnetism. (a) True (b) False
30. 30.⚖️ 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) True (b) False
31. 31.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) air (c) smoke (d) sand
32. 32.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
33. 33.True or false: a magnetic chess set works by air pressure. (a) False (b) True
34. 34.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
35. 35.⚖️ 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 kept the same. (a) False (b) True
36. 36.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
37. 37.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a drinking straw (d) a magnetic chess set
38. 38.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a fridge magnet (d) a medicine dropper
39. 39.⚖️ 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
40. 40.🔍 Which is the odd one out? (a) a medicine dropper (b) a fridge magnet (c) a vacuum cleaner (d) a bicycle pump

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