Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 429 · 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? Which of these is the one thing we change? (a) the way we turn it (b) the same card (c) how full the glass is (d) the same glass
2. 2.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a glass of water (c) a balloon (d) a mirror
3. 3.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a balloon (c) a sink or a bucket (d) a stiff postcard
4. 4.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) yeast (c) a sink or a bucket (d) a magnet
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 change it (b) we keep it the same (c) we measure it
6. 6.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) friction (c) magnetism (d) air pressure
7. 7.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a suction hook (c) a vacuum cleaner (d) a compass needle
8. 8.🔍 Which is the odd one out? (a) a magnetic chess set (b) a drinking straw (c) a vacuum cleaner (d) a medicine dropper
9. 9.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a battery cell (c) a sink or a bucket (d) a towel
10. 10.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
11. 11.🧺 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 mirror (c) a towel (d) a stiff postcard
12. 12.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
13. 13.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
14. 14.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
15. 15.⚖️ 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 change it (c) we measure it
16. 16.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
17. 17.🛟 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
18. 18.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
19. 19.True or false: a magnetic chess set works by magnetism. (a) False (b) True
20. 20.🥛 Which of these works by magnetism? (a) a suction hook (b) a magnetic pin holder (c) a medicine dropper (d) a drinking straw
21. 21.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) water is hiding there (c) the bottle is magnetic (d) air inside pushes back
22. 22.🥛 Which of these works by air pressure? (a) a drinking straw (b) a magnetic chess set (c) a magnetic pin holder (d) a fridge magnet
23. 23.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
24. 24.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
25. 25.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to grow plants (c) to catch any spills (d) to cool the glass
26. 26.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
27. 27.⚖️ 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 change it (b) we keep it the same (c) we measure it
28. 28.🥛 Which of these works by magnetism? (a) a suction hook (b) a fridge magnet (c) a bicycle pump (d) a vacuum cleaner
29. 29.⚖️ 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 way we turn it (c) the same card (d) how full the glass is
30. 30.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the glass breaks (c) the card stays on (d) the card flies away
31. 31.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
32. 32.⚖️ 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
33. 33.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a magnetic chess set (d) a drinking straw
34. 34.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
35. 35.⚖️ 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) True (b) False
36. 36.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
37. 37.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) juice likes plastic (c) the straw is hot (d) air pushes it up
38. 38.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a towel (d) yeast
39. 39.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
40. 40.⚖️ 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) how full the glass is (b) whether the card stays (c) the same card

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