Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 181 · 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.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) the straw is hot (c) air pushes it up (d) juice likes plastic
2. 2.⚖️ 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) whether the card stays (c) the way we turn it (d) how full the glass is
3. 3.🥛 Which of these works by air pressure? (a) a drinking straw (b) a magnetic pin holder (c) a compass needle (d) a fridge magnet
4. 4.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a battery cell (c) a glass of water (d) a sink or a bucket
5. 5.🧺 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
6. 6.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
7. 7.🧺 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 glass of water (c) a stiff postcard (d) yeast
8. 8.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
9. 9.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a medicine dropper (c) a bicycle pump (d) a suction hook
10. 10.🛟 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
11. 11.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) turmeric powder (c) a glass of water (d) a towel
12. 12.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) the card gets wet (c) it looks nicer (d) water is heavier
13. 13.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) sand (c) water (d) smoke
14. 14.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to catch any spills (c) to grow plants (d) to make it rain
15. 15.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
16. 16.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
17. 17.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
18. 18.🧺 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) yeast
19. 19.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
20. 20.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a compass needle (c) a fridge magnet (d) a bicycle pump
21. 21.⚖️ 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
22. 22.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
23. 23.True or false: a magnet is not 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) a balloon (b) a glass of water (c) a sink or a bucket (d) a towel
25. 25.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
26. 26.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
27. 27.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) glue on the card (c) a magnet (d) the cold water
28. 28.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
29. 29.True or false: a suction hook works by magnetism. (a) True (b) False
30. 30.True or false: a drinking straw works by magnetism. (a) False (b) True
31. 31.True or false: a medicine dropper works by magnetism. (a) True (b) False
32. 32.🥛 Which of these works by magnetism? (a) a drinking straw (b) a bicycle pump (c) a medicine dropper (d) a magnetic pin holder
33. 33.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
34. 34.⚖️ 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
35. 35.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a mirror (c) a towel (d) turmeric powder
36. 36.True or false: a compass needle works by air pressure. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) a magnetic chess set (b) a fridge magnet (c) a compass needle (d) a vacuum cleaner
38. 38.⚖️ 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
39. 39.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a stiff postcard (c) a mirror (d) a magnet
40. 40.True or false: a magnetic chess set works by air pressure. (a) True (b) False

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