Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 923 · 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 is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a compass needle (d) a vacuum cleaner
2. 2.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) over a sink or bucket (d) on a bed
3. 3.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
4. 4.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
5. 5.True or false: a suction hook works by magnetism. (a) True (b) False
6. 6.⚖️ 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
7. 7.🧺 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 mirror (d) a sink or a bucket
8. 8.🔮 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
9. 9.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic pin holder (c) a medicine dropper (d) a suction hook
10. 10.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
11. 11.🧺 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 stiff postcard (c) a magnet (d) a towel
12. 12.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
13. 13.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
14. 14.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is magnetic (d) it is hotter
15. 15.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a balloon (c) a sink or a bucket (d) a stiff postcard
16. 16.True or false: a drinking straw works by magnetism. (a) False (b) True
17. 17.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) a magnet (c) air pushing up (d) the cold water
18. 18.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
19. 19.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a bicycle pump (c) a drinking straw (d) a magnetic pin holder
20. 20.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
21. 21.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a medicine dropper (c) a vacuum cleaner (d) a compass needle
22. 22.⚖️ 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 keep it the same (c) we measure it
23. 23.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to make it rain (c) to cool the glass (d) to grow plants
24. 24.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) a stiff postcard (d) a sink or a bucket
25. 25.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a magnetic pin holder (d) a bicycle pump
26. 26.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a drinking straw (c) a fridge magnet (d) a magnetic chess set
27. 27.⚖️ 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 same card (c) how full the glass is (d) whether the card stays
28. 28.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a compass needle (d) a vacuum cleaner
29. 29.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) air pressure (c) friction (d) magnetism
30. 30.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) air (d) sand
31. 31.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
32. 32.🧺 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 stiff postcard (c) yeast (d) a glass of water
33. 33.⚖️ 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 change it (b) we keep it the same (c) we measure it
34. 34.True or false: a magnetic chess set works by air pressure. (a) False (b) True
35. 35.🧺 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 balloon (d) a towel
36. 36.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a sink or a bucket (c) yeast (d) a towel
37. 37.⚖️ 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
38. 38.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
39. 39.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
40. 40.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed

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