Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 857 · 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 stiff postcard (b) a glass of water (c) a balloon (d) a sink or a bucket
2. 2.🔍 Which is the odd one out? (a) a medicine dropper (b) a magnetic chess set (c) a magnetic pin holder (d) a fridge magnet
3. 3.🥛 Which of these works by magnetism? (a) a drinking straw (b) a suction hook (c) a vacuum cleaner (d) a compass needle
4. 4.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a magnet (b) a stiff postcard (c) a towel (d) a glass of water
5. 5.🥛 Which of these works by air pressure? (a) a bicycle pump (b) a magnetic pin holder (c) a magnetic chess set (d) a fridge magnet
6. 6.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) air pushes it up (c) juice likes plastic (d) the straw is magnetic
7. 7.🥛 Which of these works by air pressure? (a) a suction hook (b) a fridge magnet (c) a magnetic chess set (d) a compass needle
8. 8.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a balloon (c) a magnet (d) a stiff postcard
9. 9.⚖️ 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) the way we turn it (b) whether the card stays (c) how full the glass is
10. 10.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) near a plug point (c) over a sink or bucket (d) over a laptop
11. 11.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a mirror (c) a magnet (d) a sink or a bucket
12. 12.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a drinking straw (d) a magnetic chess set
13. 13.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
14. 14.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a medicine dropper (c) a magnetic chess set (d) a drinking straw
15. 15.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
16. 16.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) air (d) sand
17. 17.⚖️ 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
18. 18.⚖️ 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) how full the glass is (b) the way we turn it (c) whether the card stays (d) the same card
19. 19.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
20. 20.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
21. 21.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
22. 22.🧺 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) turmeric powder (d) a stiff postcard
23. 23.⚖️ 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 change it (b) we measure it (c) we keep it the same
24. 24.⚖️ 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 change it (b) we keep it the same (c) we measure it
25. 25.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) yeast (c) a mirror (d) a glass of water
26. 26.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
27. 27.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we change it (b) we keep it the same (c) we measure it
28. 28.🥛 Which of these works by magnetism? (a) a suction hook (b) a bicycle pump (c) a drinking straw (d) a fridge magnet
29. 29.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a stiff postcard (c) a towel (d) a glass of water
30. 30.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a sink or a bucket (c) a glass of water (d) a stiff postcard
31. 31.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
32. 32.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
33. 33.⚖️ 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 glass (c) whether the card stays
34. 34.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
35. 35.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the card flies away (c) the card stays on (d) the glass breaks
36. 36.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a drinking straw (d) a compass needle
37. 37.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
38. 38.🔍 Which is the odd one out? (a) a suction hook (b) a drinking straw (c) a magnetic chess set (d) a vacuum cleaner
39. 39.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
40. 40.True or false: a suction hook works by magnetism. (a) False (b) True

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