Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 452 · 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 drinking straw works by air pressure. (a) True (b) False
2. 2.True or false: a medicine dropper works by air pressure. (a) True (b) False
3. 3.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a balloon (c) a mirror (d) a sink or a bucket
4. 4.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
5. 5.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
6. 6.True or false: a suction hook works by air pressure. (a) False (b) True
7. 7.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
8. 8.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is hot (c) air pushes it up (d) the straw is magnetic
9. 9.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a battery cell (d) a glass of water
10. 10.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
11. 11.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a mirror (c) a sink or a bucket (d) a glass of water
12. 12.⚖️ 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 change it (c) we keep it the same
13. 13.⚖️ 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 what we measure. (a) False (b) True
14. 14.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
15. 15.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) sand (c) smoke (d) water
16. 16.⚖️ 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
17. 17.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) glue on the card (c) the cold water (d) a magnet
18. 18.🧺 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
19. 19.⚖️ 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) whether the card stays (c) the same glass (d) the way we turn it
20. 20.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a compass needle (c) a magnetic pin holder (d) a fridge magnet
21. 21.⚖️ 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
22. 22.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) a stiff postcard (d) turmeric powder
23. 23.True or false: a bicycle pump works by air pressure. (a) False (b) True
24. 24.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
25. 25.⚖️ 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
26. 26.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
27. 27.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) on a bed (d) near a plug point
28. 28.🧺 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 towel (c) a balloon (d) a glass of water
29. 29.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a balloon (c) a battery cell (d) a stiff postcard
30. 30.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a sink or a bucket (c) a towel (d) a glass of water
31. 31.⚖️ 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) how full the glass is (b) the way we turn it (c) whether the card stays (d) the same glass
32. 32.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
33. 33.⚖️ 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 keep it the same (b) we change it (c) we measure it
34. 34.🛟 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 magnetic (d) it is hotter
35. 35.⚖️ 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
36. 36.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) a suction hook (b) a magnetic pin holder (c) a bicycle pump (d) a vacuum cleaner
38. 38.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
39. 39.🔍 Which is the odd one out? (a) a magnetic chess set (b) a magnetic pin holder (c) a bicycle pump (d) a compass needle
40. 40.🧺 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) a towel (d) a battery cell

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