Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 150 · 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.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
2. 2.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to cool the glass (c) to catch any spills (d) to grow plants
3. 3.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a medicine dropper (c) a compass needle (d) a magnetic pin holder
4. 4.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
5. 5.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a sink or bucket (c) near a plug point (d) over a laptop
6. 6.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a glass of water (c) yeast (d) a mirror
7. 7.🥛 Which of these works by magnetism? (a) a drinking straw (b) a fridge magnet (c) a suction hook (d) a medicine dropper
8. 8.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) a magnet (c) the cold water (d) glue on the card
9. 9.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) water (c) air (d) smoke
10. 10.🥛 Does a bicycle pump 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 glass of water (b) a towel (c) a stiff postcard (d) a magnet
12. 12.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a magnetic chess set (c) a magnetic pin holder (d) a compass needle
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a towel (c) a glass of water (d) a stiff postcard
14. 14.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) it looks nicer (c) little air left inside (d) water is heavier
15. 15.⚖️ 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) how full the glass is (c) the same glass (d) the way we turn it
16. 16.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) turmeric powder (c) a towel (d) a battery cell
17. 17.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
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 keep it the same (c) we change it
19. 19.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
20. 20.True or false: a magnetic chess set works by magnetism. (a) True (b) False
21. 21.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a bicycle pump (d) a magnetic pin holder
22. 22.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it will not break (c) it is magnetic (d) it is heavier
23. 23.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) air pressure (c) magnetism (d) friction
24. 24.🧺 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
25. 25.⚖️ 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) False (b) True
26. 26.⚖️ 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 measure it (b) we keep it the same (c) we change it
27. 27.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.⚖️ 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
29. 29.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
30. 30.🔍 Which is the odd one out? (a) a suction hook (b) a medicine dropper (c) a vacuum cleaner (d) a fridge magnet
31. 31.⚖️ 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
32. 32.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
33. 33.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) water is hiding there (c) air inside pushes back (d) the cap is sticky
34. 34.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a towel (c) yeast (d) a stiff postcard
35. 35.⚖️ 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 change it (c) we keep it the same
36. 36.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a balloon (c) a sink or a bucket (d) a stiff postcard
37. 37.⚖️ 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
38. 38.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
39. 39.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
40. 40.⚖️ 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) the same card (c) the same glass (d) the way we turn it

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