Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 878 · 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.⚖️ 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
2. 2.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a towel (d) a mirror
3. 3.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
4. 4.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) air pressure (c) sunlight (d) friction
5. 5.🧺 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 glass of water (d) a towel
6. 6.🥛 Which of these works by magnetism? (a) a suction hook (b) a medicine dropper (c) a magnetic pin holder (d) a bicycle pump
7. 7.🧺 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 glass of water (d) a towel
8. 8.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
9. 9.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
10. 10.⚖️ 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 measure it (c) we change it
11. 11.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to cool the glass (c) to grow plants (d) to catch any spills
12. 12.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a compass needle (c) a fridge magnet (d) a medicine dropper
13. 13.⚖️ 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
14. 14.⚖️ 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) how full the glass is (c) the same card (d) the way we turn it
15. 15.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a stiff postcard (c) a sink or a bucket (d) a towel
16. 16.⚖️ 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 keep it the same (b) we measure it (c) we change it
17. 17.⚖️ 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) False (b) True
18. 18.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
19. 19.⚖️ 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) False (b) True
20. 20.🧺 Which of these is needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a battery cell (c) a mirror (d) turmeric powder
21. 21.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a medicine dropper (c) a vacuum cleaner (d) a suction hook
22. 22.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
23. 23.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) turmeric powder (d) a glass of water
24. 24.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
25. 25.🔍 Which is the odd one out? (a) a suction hook (b) a compass needle (c) a drinking straw (d) a bicycle pump
26. 26.🔍 Which is the odd one out? (a) a drinking straw (b) a suction hook (c) a fridge magnet (d) a vacuum cleaner
27. 27.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) yeast (c) a balloon (d) a glass of water
28. 28.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a stiff postcard (c) a sink or a bucket (d) a towel
29. 29.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the glass breaks (c) the water turns to ice (d) the card flies away
30. 30.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) over a sink or bucket (d) near a plug point
31. 31.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
32. 32.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
33. 33.🥤 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
34. 34.⚖️ 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
35. 35.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) False (b) True
36. 36.⚖️ 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) the same glass (b) how full the glass is (c) the same card (d) the way we turn it
37. 37.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a magnet (c) a sink or a bucket (d) a glass of water
38. 38.🔍 Which is the odd one out? (a) a magnetic chess set (b) a vacuum cleaner (c) a medicine dropper (d) a bicycle pump
39. 39.True or false: a compass needle works by air pressure. (a) False (b) True
40. 40.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a suction hook (d) a magnetic chess set

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