Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 132 · 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? What do we do with “the same card”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
3. 3.🧺 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 stiff postcard (c) a towel (d) a mirror
4. 4.⚖️ 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 measure it (c) we keep it the same
5. 5.🧺 Which of these is not needed for the card-on-a-glass trick? (a) turmeric powder (b) a sink or a bucket (c) a towel (d) a stiff postcard
6. 6.🔍 Which is the odd one out? (a) a suction hook (b) a fridge magnet (c) a magnetic chess set (d) a compass needle
7. 7.True or false: a compass needle works by air pressure. (a) False (b) True
8. 8.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
9. 9.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
10. 10.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a drinking straw (d) a compass needle
11. 11.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) a stiff postcard (d) yeast
12. 12.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a magnet (c) a towel (d) a glass of water
13. 13.True or false: a fridge magnet works by magnetism. (a) False (b) True
14. 14.⚖️ 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) whether the card stays (b) the same glass (c) how full the glass is
15. 15.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a mirror (c) a battery cell (d) a magnet
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 what we measure. (a) True (b) False
17. 17.📘 Air presses on everything around us. What is this push called? (a) friction (b) sunlight (c) magnetism (d) air pressure
18. 18.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a mirror (b) a stiff postcard (c) a towel (d) a glass of water
19. 19.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a magnetic chess set (d) a vacuum cleaner
20. 20.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) the straw is hot (c) juice likes plastic (d) air pushes it up
21. 21.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) near a plug point (c) over a sink or bucket (d) over a laptop
22. 22.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a balloon (c) a stiff postcard (d) a glass of water
23. 23.⚖️ 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 keep it the same (c) we change it
24. 24.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) a battery cell (d) a sink or a bucket
25. 25.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
26. 26.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
27. 27.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.🔍 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
29. 29.⚖️ 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
30. 30.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the bottle is magnetic (c) water is hiding there (d) the cap is sticky
31. 31.🧺 Do we need a balloon 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: the same glass is the one thing we change. (a) True (b) False
33. 33.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
34. 34.⚖️ 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) whether the card stays (d) how full the glass is
35. 35.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
36. 36.⚖️ 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
37. 37.True or false: a magnetic chess set works by air pressure. (a) True (b) False
38. 38.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a bicycle pump (c) a compass needle (d) a suction hook
39. 39.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
40. 40.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) air (c) sand (d) smoke

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