Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 125 · 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.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) yeast (d) a sink or a bucket
2. 2.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a sink or a bucket (c) a battery cell (d) turmeric powder
3. 3.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
4. 4.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
5. 5.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a stiff postcard (c) a sink or a bucket (d) a glass of water
6. 6.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
7. 7.⚖️ 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
8. 8.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
9. 9.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the water turns to ice (c) the card stays on (d) the card flies away
10. 10.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) on a bed (d) over a sink or bucket
11. 11.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) a glass of water (d) yeast
12. 12.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
13. 13.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
14. 14.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
15. 15.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a towel (c) a stiff postcard (d) a balloon
16. 16.⚖️ 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 way we turn it (b) the same glass (c) whether the card stays (d) how full the glass is
17. 17.True or false: a drinking straw works by magnetism. (a) True (b) False
18. 18.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a battery cell (d) a sink or a bucket
19. 19.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a suction hook (c) a magnetic pin holder (d) a compass needle
20. 20.🔍 Which is the odd one out? (a) a magnetic chess set (b) a bicycle pump (c) a drinking straw (d) a suction hook
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) how full the glass is (b) whether the card stays (c) the way we turn it
22. 22.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) air pushes it up (c) the straw is magnetic (d) the straw is hot
23. 23.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) smoke (d) sand
24. 24.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) air pushing up (c) the cold water (d) a magnet
25. 25.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is heavier (c) it will not break (d) it is magnetic
26. 26.⚖️ 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) False (b) True
27. 27.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
28. 28.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
29. 29.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) yeast (c) a balloon (d) turmeric powder
30. 30.⚖️ 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 the one thing we change. (a) True (b) False
31. 31.⚖️ 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
32. 32.True or false: a suction hook works by air pressure. (a) True (b) False
33. 33.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
34. 34.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a drinking straw (c) a medicine dropper (d) a bicycle pump
35. 35.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) turmeric powder (c) a stiff postcard (d) a towel
36. 36.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we keep it the same (b) we change it (c) we measure it
37. 37.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) the cap is sticky (c) air inside pushes back (d) water is hiding there
38. 38.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) little air left inside (c) the card gets wet (d) it looks nicer
39. 39.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
40. 40.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure

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