Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 264 · 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 compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
2. 2.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a battery cell (c) a sink or a bucket (d) a stiff postcard
3. 3.True or false: a medicine dropper works by air pressure. (a) True (b) False
4. 4.🥛 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
5. 5.⚖️ 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) False (b) True
6. 6.True or false: a drinking straw works by magnetism. (a) False (b) True
7. 7.True or false: a medicine dropper works by magnetism. (a) False (b) True
8. 8.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) True (b) False
9. 9.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
10. 10.⚖️ 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
11. 11.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) magnetism (c) air pressure (d) friction
12. 12.⚖️ 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) the way we turn it (b) whether the card stays (c) how full the glass is (d) the same glass
13. 13.⚖️ 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
14. 14.🧺 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 balloon (c) a stiff postcard (d) a glass of water
15. 15.🔮 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
16. 16.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
17. 17.True or false: a compass needle works by air pressure. (a) True (b) False
18. 18.⚖️ 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 way we turn it (c) the same card (d) whether the card stays
19. 19.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
20. 20.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a battery cell (c) a stiff postcard (d) yeast
21. 21.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) a stiff postcard (d) a mirror
22. 22.🥛 Which of these works by air pressure? (a) a compass needle (b) a medicine dropper (c) a magnetic chess set (d) a fridge magnet
23. 23.⚖️ 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
24. 24.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a compass needle (c) a drinking straw (d) a suction hook
25. 25.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) yeast (d) a towel
27. 27.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
29. 29.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) the card gets wet (c) little air left inside (d) it looks nicer
30. 30.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
31. 31.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) a towel (d) a sink or a bucket
32. 32.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
33. 33.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) yeast (c) a balloon (d) a glass of water
34. 34.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
35. 35.⚖️ 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 measure it (b) we change it (c) we keep it the same
36. 36.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we measure it (b) we keep it the same (c) we change it
37. 37.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
38. 38.⚖️ 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
39. 39.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
40. 40.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a compass needle (d) a drinking straw

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