Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 723 · 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? What do we do with “how full the glass is”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
3. 3.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic pin holder (c) a fridge magnet (d) a compass needle
4. 4.🥛 Which of these works by magnetism? (a) a compass needle (b) a medicine dropper (c) a suction hook (d) a vacuum cleaner
5. 5.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) a medicine dropper (b) a fridge magnet (c) a bicycle pump (d) a vacuum cleaner
7. 7.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
8. 8.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a magnet (c) a glass of water (d) a towel
9. 9.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) near a plug point (c) on a bed (d) over a laptop
10. 10.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
11. 11.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
12. 12.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a drinking straw (d) a fridge magnet
13. 13.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
14. 14.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) sand (d) air
15. 15.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
16. 16.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
17. 17.⚖️ 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) whether the card stays (c) the same glass (d) the same card
18. 18.True or false: a bicycle pump works by magnetism. (a) True (b) False
19. 19.🔮 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
20. 20.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
21. 21.⚖️ 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
22. 22.⚖️ 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
23. 23.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
24. 24.🥛 Which of these works by magnetism? (a) a drinking straw (b) a medicine dropper (c) a fridge magnet (d) a vacuum cleaner
25. 25.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
26. 26.⚖️ 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 same card (b) whether the card stays (c) how full the glass is
27. 27.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a glass of water (d) a mirror
28. 28.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a balloon (c) a sink or a bucket (d) a towel
29. 29.🥛 Which of these works by magnetism? (a) a drinking straw (b) a suction hook (c) a magnetic pin holder (d) a vacuum cleaner
30. 30.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) friction (c) air pressure (d) sunlight
31. 31.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
32. 32.🔍 Which is the odd one out? (a) a medicine dropper (b) a vacuum cleaner (c) a drinking straw (d) a magnetic pin holder
33. 33.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
34. 34.True or false: a drinking straw works by magnetism. (a) False (b) True
35. 35.🔍 Which is the odd one out? (a) a bicycle pump (b) a drinking straw (c) a suction hook (d) a magnetic chess set
36. 36.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
37. 37.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) turmeric powder (c) a towel (d) a stiff postcard
38. 38.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a glass of water (c) a magnet (d) a sink or a bucket
39. 39.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) juice likes plastic (c) air pushes it up (d) the straw is magnetic
40. 40.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True

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