Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 695 · 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.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) friction (c) sunlight (d) magnetism
2. 2.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
3. 3.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
4. 4.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) smoke (d) sand
5. 5.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a sink or a bucket (d) turmeric powder
6. 6.⚖️ 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 same card (c) how full the glass is (d) the way we turn it
7. 7.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a compass needle (c) a suction hook (d) a bicycle pump
8. 8.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a medicine dropper (d) a fridge magnet
9. 9.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a balloon (c) a towel (d) a battery cell
10. 10.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is hotter (c) it will not break (d) it is magnetic
11. 11.🥛 Which of these works by magnetism? (a) a drinking straw (b) a bicycle pump (c) a magnetic pin holder (d) a medicine dropper
12. 12.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a vacuum cleaner (d) a magnetic pin holder
13. 13.⚖️ 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) how full the glass is (b) the same card (c) the way we turn it (d) whether the card stays
14. 14.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
15. 15.🔮 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) water is hiding there (d) air inside pushes back
16. 16.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) on a bed (c) over a sink or bucket (d) near a plug point
17. 17.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) the straw is hot (c) air pushes it up (d) juice likes plastic
18. 18.⚖️ 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 what we measure. (a) True (b) False
19. 19.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
20. 20.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a sink or a bucket (d) yeast
21. 21.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
22. 22.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) glue on the card (c) the cold water (d) a magnet
23. 23.True or false: a bicycle pump works by magnetism. (a) True (b) False
24. 24.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
25. 25.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
26. 26.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
27. 27.🔍 Which is the odd one out? (a) a suction hook (b) a medicine dropper (c) a bicycle pump (d) a magnetic chess set
28. 28.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a magnet (c) a towel (d) a glass of water
29. 29.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) yeast (c) a towel (d) a glass of water
30. 30.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a magnet (b) a sink or a bucket (c) a towel (d) a glass of water
31. 31.True or false: a fridge magnet works by air pressure. (a) False (b) True
32. 32.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) yeast (c) a sink or a bucket (d) a balloon
33. 33.⚖️ 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
34. 34.⚖️ 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 glass (b) whether the card stays (c) how full the glass is
35. 35.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) yeast (c) a mirror (d) a stiff postcard
36. 36.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
37. 37.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
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) False (b) True
39. 39.🥛 Which of these works by magnetism? (a) a drinking straw (b) a bicycle pump (c) a vacuum cleaner (d) a magnetic chess set
40. 40.True or false: a fridge magnet works by magnetism. (a) False (b) True

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