Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 933 · 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 needed for the card-on-a-glass trick? (a) a mirror (b) a stiff postcard (c) yeast (d) a magnet
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 card (b) the way we turn it (c) whether the card stays (d) the same glass
3. 3.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
4. 4.⚖️ 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) whether the card stays (b) the same glass (c) how full the glass is
5. 5.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
6. 6.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a battery cell (b) a sink or a bucket (c) a towel (d) a glass of water
7. 7.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
8. 8.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to make it rain (c) to cool the glass (d) to grow plants
9. 9.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
10. 10.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
11. 11.🧺 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 magnet (d) a glass of water
12. 12.🧺 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 glass of water
13. 13.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
14. 14.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a glass of water (c) a sink or a bucket (d) a towel
15. 15.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
16. 16.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) friction (c) magnetism (d) sunlight
17. 17.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a magnetic pin holder (d) a suction hook
18. 18.⚖️ 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
19. 19.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a stiff postcard (c) a sink or a bucket (d) a towel
20. 20.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) turmeric powder (d) a glass of water
21. 21.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
22. 22.⚖️ 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
23. 23.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) True (b) False
24. 24.⚖️ 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 what we measure. (a) True (b) False
25. 25.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
26. 26.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) yeast (c) a towel (d) a mirror
27. 27.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) True (b) False
28. 28.⚖️ 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 same glass (c) the same card (d) how full the glass is
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? True or false: the way we turn it is kept the same. (a) True (b) False
31. 31.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
32. 32.⚖️ 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) True (b) False
33. 33.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) turmeric powder (c) a glass of water (d) a stiff postcard
34. 34.True or false: a magnetic chess set works by magnetism. (a) False (b) True
35. 35.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
36. 36.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) sand (d) air
37. 37.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
38. 38.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
39. 39.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a medicine dropper (d) a magnetic pin holder
40. 40.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed

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