Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 981 · 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.🛟 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
2. 2.🥛 Which of these works by air pressure? (a) a drinking straw (b) a compass needle (c) a magnetic pin holder (d) a fridge magnet
3. 3.⚖️ 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 way we turn it (c) whether the card stays (d) how full the glass is
4. 4.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a vacuum cleaner (d) a compass needle
5. 5.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) water is heavier (c) the card gets wet (d) it looks nicer
6. 6.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) air (d) sand
7. 7.True or false: a fridge magnet works by air pressure. (a) True (b) False
8. 8.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the glass breaks (c) the card stays on (d) the card flies away
9. 9.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
10. 10.True or false: a magnetic chess set works by magnetism. (a) True (b) False
11. 11.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
12. 12.⚖️ 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
13. 13.True or false: a bicycle pump works by magnetism. (a) True (b) False
14. 14.🥛 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
15. 15.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
16. 16.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) water is hiding there (c) the bottle is magnetic (d) air inside pushes back
17. 17.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a towel (c) a sink or a bucket (d) a glass of water
18. 18.🧺 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 towel (d) yeast
19. 19.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) the cold water (c) glue on the card (d) air pushing up
20. 20.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) turmeric powder (c) a glass of water (d) a battery cell
21. 21.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
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.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
24. 24.⚖️ 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 kept the same. (a) True (b) False
25. 25.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
26. 26.🧺 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 towel (d) a battery cell
27. 27.🔍 Which is the odd one out? (a) a compass needle (b) a drinking straw (c) a fridge magnet (d) a magnetic chess set
28. 28.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
29. 29.⚖️ 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 kept the same. (a) True (b) False
30. 30.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
31. 31.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a mirror (d) a sink or a bucket
32. 32.🥛 Which of these works by magnetism? (a) a drinking straw (b) a medicine dropper (c) a fridge magnet (d) a bicycle pump
33. 33.🧺 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) turmeric powder
34. 34.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
35. 35.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is hotter (c) it is magnetic (d) it is heavier
36. 36.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to make it rain (c) to catch any spills (d) to grow plants
37. 37.🔍 Which is the odd one out? (a) a fridge magnet (b) a suction hook (c) a medicine dropper (d) a vacuum cleaner
38. 38.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
39. 39.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a sink or a bucket (d) a balloon
40. 40.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a mirror (c) a towel (d) a stiff postcard

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