Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 180 · 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.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a magnet (c) yeast (d) a stiff postcard
2. 2.⚖️ 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
3. 3.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) on a bed (c) over a laptop (d) near a plug point
4. 4.⚖️ 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 measure it (c) we change it
5. 5.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the cap is sticky (c) water is hiding there (d) the bottle is magnetic
6. 6.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a mirror (c) a glass of water (d) turmeric powder
7. 7.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
8. 8.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
9. 9.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a glass of water (d) a mirror
10. 10.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
11. 11.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) the straw is hot (c) the straw is magnetic (d) juice likes plastic
12. 12.⚖️ 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 keep it the same (c) we measure it
13. 13.⚖️ 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) the same card (c) the way we turn it (d) how full the glass is
14. 14.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a compass needle (c) a suction hook (d) a medicine dropper
15. 15.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) air (c) smoke (d) sand
16. 16.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
17. 17.True or false: a sink or a bucket is 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? True or false: the way we turn it is kept the same. (a) False (b) True
19. 19.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
20. 20.🥛 Which of these works by magnetism? (a) a compass needle (b) a bicycle pump (c) a vacuum cleaner (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) whether the card stays (b) how full the glass is (c) the same card
22. 22.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) turmeric powder (c) yeast (d) a towel
23. 23.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a balloon (c) a stiff postcard (d) a glass of water
24. 24.⚖️ 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) True (b) False
25. 25.🧺 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 magnet (d) a stiff postcard
26. 26.📘 Air presses on everything around us. What is this push called? (a) friction (b) air pressure (c) magnetism (d) sunlight
27. 27.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
28. 28.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
29. 29.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a magnetic chess set (d) a suction hook
30. 30.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
31. 31.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a suction hook (c) a vacuum cleaner (d) a drinking straw
32. 32.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
33. 33.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a drinking straw (d) a magnetic pin holder
34. 34.🧺 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 sink or a bucket (d) a balloon
35. 35.⚖️ 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) how full the glass is (d) whether the card stays
36. 36.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a sink or a bucket (c) a magnet (d) yeast
37. 37.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
38. 38.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
39. 39.True or false: a medicine dropper works by magnetism. (a) False (b) True
40. 40.True or false: a magnetic pin holder works by air pressure. (a) True (b) False

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