Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 259 · 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 works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a compass needle (d) a drinking straw
2. 2.🧺 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 glass of water (c) turmeric powder (d) a towel
3. 3.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) air pushing up (c) glue on the card (d) a magnet
4. 4.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
5. 5.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
6. 6.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
7. 7.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
8. 8.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a suction hook (c) a medicine dropper (d) a compass needle
9. 9.⚖️ 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 change it (b) we keep it the same (c) we measure it
10. 10.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a sink or a bucket (d) yeast
11. 11.⚖️ 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 keep it the same (b) we change it (c) we measure it
12. 12.🔍 Which is the odd one out? (a) a medicine dropper (b) a magnetic chess set (c) a drinking straw (d) a suction hook
13. 13.🥛 Which of these works by magnetism? (a) a suction hook (b) a drinking straw (c) a bicycle pump (d) a fridge magnet
14. 14.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
15. 15.🥛 Which of these works by air pressure? (a) a bicycle pump (b) a fridge magnet (c) a magnetic chess set (d) a compass needle
16. 16.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a drinking straw (d) a fridge magnet
17. 17.⚖️ 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
18. 18.⚖️ 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) True (b) False
19. 19.⚖️ 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
20. 20.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
21. 21.⚖️ 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 same glass (c) the same card (d) whether the card stays
22. 22.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) yeast (c) a sink or a bucket (d) a stiff postcard
23. 23.🔍 Which is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a fridge magnet (d) a suction hook
24. 24.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) a glass of water (d) a balloon
25. 25.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is magnetic (c) it is hotter (d) it will not break
26. 26.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
27. 27.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
28. 28.⚖️ 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 kept the same. (a) False (b) True
29. 29.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) turmeric powder (c) a glass of water (d) a stiff postcard
30. 30.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
31. 31.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a sink or a bucket (c) a battery cell (d) a magnet
32. 32.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
33. 33.⚖️ 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
34. 34.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) friction (c) air pressure (d) magnetism
35. 35.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a glass of water (c) a towel (d) a stiff postcard
36. 36.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) turmeric powder (c) yeast (d) a magnet
37. 37.True or false: a fridge magnet works by magnetism. (a) True (b) False
38. 38.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
39. 39.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
40. 40.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to make it rain (c) to catch any spills (d) to cool the glass

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