Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 868 · 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 magnetic chess set works by air pressure. (a) True (b) False
2. 2.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a mirror (c) a stiff postcard (d) a magnet
3. 3.🔍 Which is the odd one out? (a) a medicine dropper (b) a suction hook (c) a compass needle (d) a drinking straw
4. 4.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) smoke (c) air (d) sand
5. 5.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a drinking straw (c) a magnetic chess set (d) a compass needle
6. 6.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
7. 7.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a towel (c) a glass of water (d) a sink or a bucket
8. 8.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
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 measure it (b) we change it (c) we keep it the same
10. 10.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) juice likes plastic (c) the straw is magnetic (d) air pushes it up
11. 11.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) False (b) True
12. 12.📘 Air presses on everything around us. What is this push called? (a) friction (b) magnetism (c) sunlight (d) air pressure
13. 13.⚖️ 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 keep it the same (c) we change it
14. 14.🔍 Which is the odd one out? (a) a suction hook (b) a drinking straw (c) a medicine dropper (d) a fridge magnet
15. 15.⚖️ 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 glass (c) how full the glass is (d) the same card
16. 16.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
17. 17.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a medicine dropper (c) a fridge magnet (d) a compass needle
18. 18.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a sink or bucket (c) over a laptop (d) on a bed
19. 19.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a towel (c) a stiff postcard (d) a battery cell
20. 20.⚖️ 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
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 what we measure. (a) False (b) True
22. 22.⚖️ 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
23. 23.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
24. 24.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a balloon (c) turmeric powder (d) a towel
25. 25.⚖️ 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 change it (b) we keep it the same (c) we measure it
26. 26.⚖️ 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 card (b) whether the card stays (c) the way we turn it (d) how full the glass is
27. 27.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
28. 28.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
29. 29.⚖️ 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
30. 30.True or false: a suction hook works by magnetism. (a) True (b) False
31. 31.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
32. 32.⚖️ 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) False (b) True
33. 33.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card stays on (c) the water turns to ice (d) the card flies away
34. 34.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to cool the glass (c) to catch any spills (d) to make it rain
35. 35.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a drinking straw (c) a suction hook (d) a compass needle
36. 36.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
37. 37.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a sink or a bucket (d) turmeric powder
38. 38.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a magnetic pin holder (c) a fridge magnet (d) a bicycle pump
39. 39.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a drinking straw (c) a vacuum cleaner (d) a suction hook
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) turmeric powder

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