Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 178 · 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.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
2. 2.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
3. 3.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic pin holder (c) a compass needle (d) a magnetic chess set
4. 4.⚖️ 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
5. 5.⚖️ 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
6. 6.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
7. 7.📘 Air presses on everything around us. What is this push called? (a) friction (b) air pressure (c) sunlight (d) magnetism
8. 8.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) on a bed (c) near a plug point (d) over a sink or bucket
9. 9.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
10. 10.🔍 Which is the odd one out? (a) a suction hook (b) a medicine dropper (c) a compass needle (d) a bicycle pump
11. 11.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
12. 12.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
13. 13.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
14. 14.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a glass of water (d) a balloon
15. 15.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a sink or a bucket (d) a balloon
16. 16.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a magnet (c) a glass of water (d) a stiff postcard
17. 17.🥛 Which of these works by magnetism? (a) a magnetic pin holder (b) a vacuum cleaner (c) a bicycle pump (d) a suction hook
18. 18.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
19. 19.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
20. 20.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a towel (c) a glass of water (d) a sink or a bucket
21. 21.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
22. 22.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
23. 23.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) yeast (c) a towel (d) a balloon
24. 24.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a medicine dropper (c) a fridge magnet (d) a magnetic pin holder
25. 25.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the card stays on (c) the water turns to ice (d) the glass breaks
26. 26.⚖️ 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 glass (b) whether the card stays (c) how full the glass is (d) the same card
27. 27.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) juice likes plastic (c) air pushes it up (d) the straw is magnetic
28. 28.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
29. 29.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a compass needle (c) a drinking straw (d) a bicycle pump
30. 30.⚖️ 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
31. 31.🥛 Which of these works by magnetism? (a) a suction hook (b) a fridge magnet (c) a drinking straw (d) a bicycle pump
32. 32.⚖️ 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
33. 33.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it will not break (d) it is hotter
34. 34.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a compass needle (c) a suction hook (d) a fridge magnet
35. 35.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a bicycle pump (d) a magnetic pin holder
36. 36.True or false: a magnetic chess set works by magnetism. (a) False (b) True
37. 37.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a mirror (b) a glass of water (c) a sink or a bucket (d) a towel
38. 38.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
39. 39.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
40. 40.True or false: a suction hook works by magnetism. (a) True (b) False

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