Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 116 · 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.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
2. 2.🧺 Which of these is not needed for the card-on-a-glass trick? (a) yeast (b) a stiff postcard (c) a sink or a bucket (d) a glass of water
3. 3.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic chess set (c) a magnetic pin holder (d) a suction hook
4. 4.⚖️ 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
5. 5.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a drinking straw (d) a magnetic pin holder
6. 6.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the cap is sticky (c) the bottle is magnetic (d) air inside pushes back
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 change it (b) we keep it the same (c) we measure it
8. 8.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a battery cell (d) a glass of water
9. 9.🛟 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
10. 10.⚖️ 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) the same glass (c) whether the card stays (d) how full the glass is
11. 11.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
12. 12.True or false: a magnetic chess set works by magnetism. (a) False (b) True
13. 13.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
14. 14.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) little air left inside (c) the card gets wet (d) water is heavier
15. 15.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
16. 16.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) a stiff postcard (d) a mirror
17. 17.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a medicine dropper (d) a fridge magnet
18. 18.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
19. 19.⚖️ 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
20. 20.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
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.⚖️ 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
23. 23.⚖️ 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 same glass
24. 24.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
25. 25.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
26. 26.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a sink or a bucket (c) a magnet (d) a mirror
27. 27.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a magnet (c) a glass of water (d) a mirror
28. 28.True or false: a fridge magnet works by magnetism. (a) True (b) False
29. 29.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) sunlight (c) friction (d) magnetism
30. 30.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it will not break (c) it is heavier (d) it is hotter
31. 31.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
32. 32.True or false: a drinking straw works by air pressure. (a) False (b) True
33. 33.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
34. 34.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) air pushes it up (c) juice likes plastic (d) the straw is magnetic
35. 35.🧺 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 mirror
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 measure it (b) we keep it the same (c) we change it
37. 37.🔍 Which is the odd one out? (a) a suction hook (b) a fridge magnet (c) a vacuum cleaner (d) a medicine dropper
38. 38.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
39. 39.⚖️ 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 way we turn it (b) whether the card stays (c) how full the glass is
40. 40.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a balloon (c) a towel (d) a glass of water

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