Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 109 · 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.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
2. 2.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
3. 3.🔍 Which is the odd one out? (a) a compass needle (b) a bicycle pump (c) a suction hook (d) a drinking straw
4. 4.⚖️ 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
5. 5.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a vacuum cleaner (d) a magnetic pin holder
6. 6.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
7. 7.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is hotter (d) it is magnetic
8. 8.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
9. 9.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) False (b) True
10. 10.True or false: a compass needle works by air pressure. (a) False (b) True
11. 11.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) on a bed (d) over a sink or bucket
12. 12.⚖️ 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 keep it the same (c) we change it
13. 13.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) magnetism (c) friction (d) air pressure
14. 14.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
15. 15.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
16. 16.⚖️ 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
17. 17.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a suction hook (c) a vacuum cleaner (d) a magnetic chess set
18. 18.⚖️ 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 kept the same. (a) False (b) True
19. 19.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a stiff postcard (c) a sink or a bucket (d) a glass of water
20. 20.⚖️ 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 glass (b) whether the card stays (c) how full the glass is
21. 21.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) yeast (c) a glass of water (d) a towel
22. 22.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) yeast (c) a battery cell (d) a mirror
23. 23.⚖️ 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
24. 24.🥛 Which of these works by air pressure? (a) a medicine dropper (b) a compass needle (c) a magnetic chess set (d) a magnetic pin holder
25. 25.🧺 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 stiff postcard (c) a glass of water (d) a mirror
26. 26.⚖️ 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) whether the card stays (b) the way we turn it (c) how full the glass is (d) the same glass
27. 27.🥛 Which of these works by magnetism? (a) a suction hook (b) a fridge magnet (c) a vacuum cleaner (d) a drinking straw
28. 28.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
29. 29.⚖️ 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 measure it (c) we keep it the same
30. 30.⚖️ 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) the same card (c) whether the card stays (d) how full the glass is
31. 31.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
32. 32.True or false: a bicycle pump works by air pressure. (a) True (b) False
33. 33.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) a magnet (c) the cold water (d) glue on the card
34. 34.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) yeast (d) a stiff postcard
35. 35.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
36. 36.⚖️ 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) False (b) True
37. 37.🔍 Which is the odd one out? (a) a magnetic chess set (b) a drinking straw (c) a fridge magnet (d) a magnetic pin holder
38. 38.🥤 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
39. 39.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic chess set (c) a magnetic pin holder (d) a bicycle pump

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