Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 735 · 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.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
2. 2.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the water turns to ice (c) the glass breaks (d) the card flies away
3. 3.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) air inside pushes back (c) the bottle is magnetic (d) the cap is sticky
4. 4.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it is heavier (d) it will not break
5. 5.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
6. 6.🔍 Which is the odd one out? (a) a fridge magnet (b) a suction hook (c) a magnetic pin holder (d) a magnetic chess set
7. 7.⚖️ 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
8. 8.⚖️ 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 way we turn it (c) how full the glass is (d) whether the card stays
9. 9.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) a magnet (c) glue on the card (d) the cold water
10. 10.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to catch any spills (c) to cool the glass (d) to grow plants
11. 11.True or false: a magnetic chess set works by air pressure. (a) False (b) True
12. 12.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a mirror (c) a glass of water (d) a stiff postcard
13. 13.True or false: a vacuum cleaner works by air pressure. (a) True (b) False
14. 14.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
15. 15.🧺 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 stiff postcard (d) a magnet
16. 16.🧺 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 stiff postcard (d) yeast
17. 17.True or false: a compass needle works by air pressure. (a) True (b) False
18. 18.⚖️ 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 change it (c) we keep it the same
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 same glass”? (a) we measure it (b) we keep it the same (c) we change it
20. 20.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
21. 21.📘 Air presses on everything around us. What is this push called? (a) friction (b) magnetism (c) sunlight (d) air pressure
22. 22.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a magnet (c) a glass of water (d) a sink or a bucket
23. 23.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) air (c) sand (d) water
24. 24.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
25. 25.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
26. 26.🧺 Which of these is not needed for the card-on-a-glass trick? (a) yeast (b) a stiff postcard (c) a towel (d) a glass of water
27. 27.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a bicycle pump (c) a compass needle (d) a magnetic chess set
28. 28.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) turmeric powder (c) a sink or a bucket (d) a stiff postcard
29. 29.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
30. 30.🥛 Which of these works by air pressure? (a) a suction hook (b) a magnetic pin holder (c) a magnetic chess set (d) a compass needle
31. 31.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a drinking straw (c) a suction hook (d) a magnetic pin holder
32. 32.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a towel (c) a magnet (d) a battery cell
33. 33.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
34. 34.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) True (b) False
35. 35.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a medicine dropper (c) a drinking straw (d) a magnetic pin holder
36. 36.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
37. 37.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a drinking straw (c) a bicycle pump (d) a suction hook
38. 38.🛟 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
39. 39.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) turmeric powder (d) a sink or a bucket
40. 40.⚖️ 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 change it (c) we keep it the same

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