Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 192 · 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 battery cell for the card-on-a-glass trick? (a) needed (b) not needed
2. 2.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
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.⚖️ 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
5. 5.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card stays on (c) the water turns to ice (d) the card flies away
6. 6.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) over a sink or bucket (d) near a plug point
7. 7.⚖️ 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 way we turn it (c) the same glass (d) how full the glass is
8. 8.🔮 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 grow plants (d) to catch any spills
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 magnet (c) a glass of water (d) a stiff postcard
10. 10.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) smoke (c) air (d) sand
11. 11.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is what we measure. (a) True (b) False
12. 12.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) the bottle is magnetic (c) water is hiding there (d) air inside pushes back
13. 13.🥛 Which of these works by magnetism? (a) a suction hook (b) a drinking straw (c) a bicycle pump (d) a compass needle
14. 14.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
15. 15.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
16. 16.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
17. 17.⚖️ 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
18. 18.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.🥛 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
20. 20.⚖️ 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
21. 21.⚖️ 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
22. 22.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
23. 23.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a fridge magnet (c) a compass needle (d) a magnetic chess set
24. 24.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a mirror (c) a balloon (d) a stiff postcard
25. 25.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) magnetism (c) sunlight (d) friction
26. 26.True or false: a bicycle pump works by air pressure. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a drinking straw (c) a compass needle (d) a suction hook
28. 28.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
29. 29.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) False (b) True
30. 30.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a balloon (c) turmeric powder (d) yeast
31. 31.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
32. 32.🥛 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
33. 33.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
34. 34.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
35. 35.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a bicycle pump (d) a compass needle
36. 36.⚖️ 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 same glass (c) how full the glass is
37. 37.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
38. 38.🥛 Which of these works by magnetism? (a) a drinking straw (b) a suction hook (c) a magnetic chess set (d) a bicycle pump
39. 39.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
40. 40.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False

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