Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 219 · 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.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
2. 2.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it will not break (c) it is hotter (d) it is heavier
3. 3.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) a balloon (c) turmeric powder (d) a battery cell
4. 4.⚖️ 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
5. 5.True or false: a bicycle pump works by magnetism. (a) True (b) False
6. 6.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
7. 7.⚖️ 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
8. 8.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) the straw is magnetic (c) juice likes plastic (d) the straw is hot
9. 9.🔍 Which is the odd one out? (a) a medicine dropper (b) a compass needle (c) a fridge magnet (d) a magnetic chess set
10. 10.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a towel (c) a glass of water (d) a sink or a bucket
11. 11.⚖️ 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 change it (b) we measure it (c) we keep it the same
12. 12.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) turmeric powder (c) a glass of water (d) a battery cell
13. 13.🔍 Which is the odd one out? (a) a drinking straw (b) a medicine dropper (c) a magnetic pin holder (d) a vacuum cleaner
14. 14.⚖️ 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
15. 15.True or false: a magnetic chess set works by air pressure. (a) True (b) False
16. 16.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a suction hook (d) a magnetic pin holder
18. 18.⚖️ 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
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 same card”? (a) we change it (b) we measure it (c) we keep it the same
20. 20.⚖️ 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) True (b) False
21. 21.True or false: a balloon is 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? Which of these is what we measure? (a) whether the card stays (b) the same card (c) the way we turn it (d) how full the glass is
23. 23.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a battery cell (d) a towel
24. 24.🔍 Which is the odd one out? (a) a compass needle (b) a bicycle pump (c) a vacuum cleaner (d) a suction hook
25. 25.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) yeast (c) a towel (d) a glass of water
26. 26.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) the card gets wet (c) water is heavier (d) little air left inside
27. 27.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
28. 28.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
29. 29.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a mirror (c) a sink or a bucket (d) a stiff postcard
30. 30.True or false: a fridge magnet works by magnetism. (a) False (b) True
31. 31.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) friction (c) sunlight (d) magnetism
32. 32.⚖️ 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 keep it the same (b) we measure it (c) we change it
33. 33.True or false: a suction hook works by air pressure. (a) False (b) True
34. 34.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) a sink or a bucket (d) a towel
35. 35.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
36. 36.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic chess set (c) a drinking straw (d) a compass needle
37. 37.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
38. 38.True or false: a magnet is not needed for the card-on-a-glass trick. (a) True (b) False
39. 39.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
40. 40.⚖️ 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

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