Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 968 · 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 not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) a glass of water (d) yeast
2. 2.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) the cold water (c) air pushing up (d) a magnet
3. 3.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a glass of water (c) yeast (d) a magnet
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.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a magnetic chess set (c) a fridge magnet (d) a medicine dropper
6. 6.True or false: a suction hook works by magnetism. (a) True (b) False
7. 7.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
8. 8.🔍 Which is the odd one out? (a) a suction hook (b) a compass needle (c) a bicycle pump (d) a drinking straw
9. 9.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) True (b) False
10. 10.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a drinking straw (c) a magnetic chess set (d) a bicycle pump
11. 11.⚖️ 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 keep it the same (c) we change it
12. 12.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
13. 13.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) it looks nicer (c) little air left inside (d) water is heavier
14. 14.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it is heavier (d) it will not break
15. 15.True or false: a compass needle works by air pressure. (a) True (b) False
16. 16.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a stiff postcard (d) turmeric powder
17. 17.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
18. 18.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a magnetic chess set (c) a fridge magnet (d) a vacuum cleaner
19. 19.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) sunlight (c) friction (d) magnetism
20. 20.⚖️ 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
21. 21.🔮 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
22. 22.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
23. 23.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
24. 24.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a glass of water (c) a stiff postcard (d) a towel
25. 25.True or false: a magnetic chess set works by air pressure. (a) True (b) False
26. 26.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
27. 27.⚖️ 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 glass (c) the same card (d) how full the glass is
28. 28.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
29. 29.True or false: a fridge magnet works by magnetism. (a) True (b) False
30. 30.⚖️ 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 measure it (b) we change it (c) we keep it the same
31. 31.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a stiff postcard (c) a mirror (d) a towel
32. 32.⚖️ 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) the same card (c) whether the card stays
33. 33.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
34. 34.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
35. 35.🧺 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 towel (c) a balloon (d) a stiff postcard
36. 36.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to grow plants (c) to make it rain (d) to cool the glass
37. 37.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
38. 38.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) a glass of water (d) a magnet
39. 39.⚖️ 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 measure it (b) we keep it the same (c) we change it
40. 40.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a suction hook (c) a magnetic chess set (d) a fridge magnet

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