Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 57 · 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.🛟 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
2. 2.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a medicine dropper (c) a vacuum cleaner (d) a suction hook
3. 3.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic pin holder (c) a drinking straw (d) a magnetic chess set
4. 4.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
5. 5.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card stays on (c) the water turns to ice (d) the card flies away
6. 6.⚖️ 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) how full the glass is (b) the same glass (c) the same card (d) whether the card stays
7. 7.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) the card gets wet (c) it looks nicer (d) little air left inside
8. 8.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is hotter (c) it is heavier (d) it is magnetic
9. 9.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a battery cell (c) a magnet (d) a stiff postcard
10. 10.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
11. 11.🧺 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 battery cell (d) a glass of water
12. 12.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
13. 13.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) air pushing up (c) the cold water (d) glue on the card
14. 14.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
15. 15.⚖️ 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
16. 16.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
17. 17.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to make it rain (c) to grow plants (d) to catch any spills
18. 18.🔍 Which is the odd one out? (a) a suction hook (b) a medicine dropper (c) a fridge magnet (d) a drinking straw
19. 19.⚖️ 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 the one thing we change. (a) False (b) True
20. 20.True or false: a bicycle pump works by magnetism. (a) False (b) True
21. 21.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
22. 22.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
23. 23.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a towel (d) a magnet
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.🔍 Which is the odd one out? (a) a drinking straw (b) a medicine dropper (c) a suction hook (d) a magnetic chess set
26. 26.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
27. 27.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
28. 28.True or false: a magnetic chess set works by magnetism. (a) True (b) False
29. 29.⚖️ 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
30. 30.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
31. 31.⚖️ 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) True (b) False
32. 32.🥛 Does a vacuum cleaner 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 towel for the card-on-a-glass trick? (a) needed (b) not needed
35. 35.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
36. 36.⚖️ 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
37. 37.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
38. 38.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
39. 39.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
40. 40.🧺 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) turmeric powder (d) a sink or a bucket

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