Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 368 · 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.⚖️ 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) whether the card stays (b) the same glass (c) how full the glass is (d) the way we turn it
2. 2.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
3. 3.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a drinking straw (c) a bicycle pump (d) a magnetic pin holder
4. 4.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a battery cell (c) turmeric powder (d) a magnet
5. 5.🧺 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 balloon (c) a stiff postcard (d) a glass of water
6. 6.🛟 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 hotter (d) it is heavier
7. 7.⚖️ 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 keep it the same (b) we change it (c) we measure it
8. 8.🥛 Which of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a magnetic chess set (d) a bicycle pump
9. 9.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic chess set (c) a medicine dropper (d) a fridge magnet
10. 10.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
11. 11.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) air inside pushes back (c) water is hiding there (d) the bottle is magnetic
12. 12.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
13. 13.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) it looks nicer (c) water is heavier (d) little air left inside
14. 14.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) True (b) False
15. 15.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
16. 16.🔍 Which is the odd one out? (a) a suction hook (b) a magnetic chess set (c) a fridge magnet (d) a compass needle
17. 17.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
18. 18.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.🔍 Which is the odd one out? (a) a drinking straw (b) a compass needle (c) a suction hook (d) a medicine dropper
20. 20.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a magnetic pin holder (d) a drinking straw
21. 21.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a bicycle pump (c) a vacuum cleaner (d) a medicine dropper
22. 22.⚖️ 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 card
23. 23.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a towel (c) a glass of water (d) a mirror
24. 24.⚖️ 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 change it (b) we keep it the same (c) we measure it
25. 25.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) a magnet (c) air pushing up (d) the cold water
26. 26.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
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) the way we turn it (b) how full the glass is (c) the same glass (d) the same card
28. 28.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) a battery cell (c) turmeric powder (d) a balloon
29. 29.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a vacuum cleaner (d) a fridge magnet
30. 30.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) a balloon (d) a glass of water
31. 31.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a sink or a bucket (c) turmeric powder (d) yeast
32. 32.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
33. 33.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is kept the same. (a) False (b) True
34. 34.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
35. 35.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to grow plants (c) to make it rain (d) to catch any spills
36. 36.🧺 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) turmeric powder (d) a stiff postcard
37. 37.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) True (b) False
38. 38.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a fridge magnet (c) a suction hook (d) a medicine dropper
39. 39.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
40. 40.🔍 Which is the odd one out? (a) a compass needle (b) a bicycle pump (c) a magnetic chess set (d) a fridge magnet

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