Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 449 · 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.🔍 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 card flies away (d) the glass breaks
2. 2.⚖️ 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 way we turn it (b) whether the card stays (c) the same card (d) the same glass
3. 3.⚖️ 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) whether the card stays (b) the way we turn it (c) how full the glass is
4. 4.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
5. 5.🔍 Which is the odd one out? (a) a magnetic chess set (b) a drinking straw (c) a fridge magnet (d) a magnetic pin holder
6. 6.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a vacuum cleaner (c) a drinking straw (d) a suction hook
7. 7.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a magnetic pin holder (d) a bicycle pump
8. 8.🔮 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
9. 9.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a fridge magnet (c) a medicine dropper (d) a bicycle pump
11. 11.⚖️ 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) True (b) False
12. 12.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
13. 13.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
14. 14.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
15. 15.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) air (c) water (d) sand
16. 16.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) False (b) True
17. 17.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
18. 18.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a compass needle (d) a suction hook
20. 20.⚖️ 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 measure it (c) we keep it the same
21. 21.⚖️ 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) whether the card stays (b) how full the glass is (c) the same card
22. 22.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
23. 23.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
24. 24.📘 Air presses on everything around us. What is this push called? (a) friction (b) air pressure (c) magnetism (d) sunlight
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 change it (b) we keep it the same (c) we measure it
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a battery cell (c) a glass of water (d) a sink or a bucket
27. 27.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the bottle is magnetic (c) water is hiding there (d) the cap is sticky
28. 28.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a suction hook (c) a medicine dropper (d) a fridge magnet
29. 29.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
30. 30.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) the cold water (c) air pushing up (d) a magnet
31. 31.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a balloon (c) a towel (d) a sink or a bucket
32. 32.🥛 Which of these works by magnetism? (a) a drinking straw (b) a suction hook (c) a magnetic pin holder (d) a medicine dropper
33. 33.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) on a bed (c) over a laptop (d) near a plug point
34. 34.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
35. 35.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic pin holder (c) a vacuum cleaner (d) a suction hook
36. 36.⚖️ 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) whether the card stays (b) the same glass (c) the same card (d) how full the glass is
37. 37.🛟 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
38. 38.True or false: a drinking straw works by magnetism. (a) True (b) False
39. 39.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) water is heavier (c) little air left inside (d) the card gets wet
40. 40.🔍 Which is the odd one out? (a) a medicine dropper (b) a compass needle (c) a suction hook (d) a drinking straw

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