Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 960 · 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 balloon (b) a towel (c) a stiff postcard (d) a sink or a bucket
2. 2.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
3. 3.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a sink or a bucket (c) a glass of water (d) a towel
4. 4.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) water is hiding there (c) the cap is sticky (d) the bottle is magnetic
5. 5.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
6. 6.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
7. 7.⚖️ 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 change it (c) we keep it the same
8. 8.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is magnetic (c) it will not break (d) it is heavier
9. 9.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
10. 10.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) friction (c) air pressure (d) sunlight
11. 11.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a compass needle (d) a suction hook
12. 12.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a drinking straw (d) a magnetic chess set
13. 13.⚖️ 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
14. 14.⚖️ 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) how full the glass is (c) whether the card stays (d) the way we turn it
15. 15.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a magnetic chess set (d) a vacuum cleaner
16. 16.⚖️ 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) False (b) True
17. 17.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) juice likes plastic (c) air pushes it up (d) the straw is hot
18. 18.True or false: a drinking straw works by magnetism. (a) True (b) False
19. 19.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
20. 20.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a balloon (c) a stiff postcard (d) turmeric powder
21. 21.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
22. 22.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
23. 23.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) little air left inside (c) it looks nicer (d) water is heavier
24. 24.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
25. 25.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
26. 26.⚖️ 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 same glass
27. 27.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
28. 28.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) yeast (c) a glass of water (d) a stiff postcard
29. 29.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a sink or bucket (d) over a laptop
30. 30.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) a stiff postcard (d) a magnet
31. 31.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
32. 32.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
33. 33.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a mirror (c) turmeric powder (d) a battery cell
34. 34.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) yeast (c) a mirror (d) a sink or a bucket
35. 35.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a drinking straw (c) a medicine dropper (d) a compass needle
36. 36.🔍 Which is the odd one out? (a) a bicycle pump (b) a drinking straw (c) a magnetic chess set (d) a suction hook
37. 37.🥛 Which of these works by air pressure? (a) a compass needle (b) a medicine dropper (c) a magnetic chess set (d) a magnetic pin holder
38. 38.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a magnetic pin holder (c) a compass needle (d) a bicycle pump
39. 39.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
40. 40.⚖️ 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

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