Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 953 · 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 is the odd one out? (a) a compass needle (b) a suction hook (c) a magnetic chess set (d) a fridge magnet
2. 2.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a suction hook (c) a drinking straw (d) a medicine dropper
3. 3.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
4. 4.⚖️ 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 way we turn it (c) how full the glass is (d) whether the card stays
5. 5.⚖️ 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 kept the same. (a) False (b) True
6. 6.🧺 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
7. 7.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a compass needle (c) a magnetic chess set (d) a suction hook
8. 8.⚖️ 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
9. 9.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
10. 10.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to cool the glass (c) to grow plants (d) to catch any spills
11. 11.True or false: a magnetic chess set works by magnetism. (a) False (b) True
12. 12.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) little air left inside (c) it looks nicer (d) the card gets wet
13. 13.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) air pressure (c) sunlight (d) friction
14. 14.🥛 Which of these works by magnetism? (a) a suction hook (b) a magnetic pin holder (c) a bicycle pump (d) a drinking straw
15. 15.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a drinking straw (c) a magnetic pin holder (d) a magnetic chess set
16. 16.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the bottle is magnetic (c) air inside pushes back (d) the cap is sticky
17. 17.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) turmeric powder (c) a battery cell (d) a balloon
18. 18.⚖️ 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
19. 19.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) a stiff postcard (d) a balloon
20. 20.⚖️ 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 glass
21. 21.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) air pushing up (c) the cold water (d) a magnet
22. 22.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
23. 23.⚖️ 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
24. 24.⚖️ 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
25. 25.⚖️ 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) the same card (d) whether the card stays
26. 26.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
27. 27.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a bicycle pump (c) a compass needle (d) a fridge magnet
28. 28.⚖️ 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 change it (c) we keep it the same
29. 29.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
30. 30.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a glass of water (c) a stiff postcard (d) yeast
31. 31.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
32. 32.⚖️ 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
33. 33.True or false: a compass needle works by magnetism. (a) False (b) True
34. 34.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it is hotter (d) it will not break
35. 35.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
36. 36.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) air pushes it up (c) the straw is hot (d) the straw is magnetic
37. 37.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a sink or a bucket (c) a towel (d) a stiff postcard
38. 38.🔍 Which is the odd one out? (a) a compass needle (b) a bicycle pump (c) a magnetic pin holder (d) a fridge magnet
39. 39.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic pin holder (c) a compass needle (d) a vacuum cleaner
40. 40.⚖️ 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 keep it the same (b) we measure it (c) we change it

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