Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 631 · 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 towel for the card-on-a-glass trick? (a) needed (b) not needed
2. 2.True or false: a bicycle pump works by magnetism. (a) True (b) False
3. 3.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) over a laptop (c) on a bed (d) near a plug point
4. 4.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
5. 5.🔍 Which is the odd one out? (a) a fridge magnet (b) a suction hook (c) a magnetic pin holder (d) a magnetic chess set
6. 6.⚖️ 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) the same card (b) how full the glass is (c) whether the card stays
7. 7.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) friction (c) air pressure (d) sunlight
8. 8.⚖️ 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 change it (b) we measure it (c) we keep it the same
9. 9.🧺 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 towel (c) a glass of water (d) yeast
10. 10.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
11. 11.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a suction hook (c) a drinking straw (d) a magnetic pin holder
12. 12.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) water (c) smoke (d) air
13. 13.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a bicycle pump (d) a magnetic chess set
14. 14.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
15. 15.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
16. 16.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
17. 17.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the card stays on (c) the water turns to ice (d) the glass breaks
18. 18.⚖️ 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
19. 19.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a bicycle pump (d) a magnetic pin holder
20. 20.🔮 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
21. 21.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) glue on the card (c) air pushing up (d) a magnet
22. 22.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a mirror (c) a glass of water (d) yeast
23. 23.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it will not break (c) it is heavier (d) it is hotter
24. 24.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a fridge magnet (c) a suction hook (d) a vacuum cleaner
25. 25.⚖️ 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
26. 26.⚖️ 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) the way we turn it (b) whether the card stays (c) how full the glass is
27. 27.⚖️ 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 change it (c) we keep it the same
28. 28.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a magnet (d) a sink or a bucket
29. 29.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a battery cell (d) a sink or a bucket
30. 30.🧺 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
31. 31.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
32. 32.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a bicycle pump (c) a suction hook (d) a compass needle
33. 33.True or false: a compass needle works by air pressure. (a) False (b) True
34. 34.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a battery cell (c) a towel (d) yeast
35. 35.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a stiff postcard (c) a mirror (d) yeast
36. 36.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) turmeric powder (d) a sink or a bucket
37. 37.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
38. 38.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is the one thing we change. (a) True (b) False
39. 39.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a mirror (c) a towel (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? Which of these is the one thing we change? (a) the same glass (b) how full the glass is (c) the way we turn it (d) the same card

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