Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 984 · 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.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a balloon (c) a towel (d) a sink or a bucket
2. 2.📘 Air presses on everything around us. What is this push called? (a) friction (b) sunlight (c) magnetism (d) air pressure
3. 3.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
4. 4.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
5. 5.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
6. 6.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) turmeric powder (c) a mirror (d) a towel
7. 7.⚖️ 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) how full the glass is (c) whether the card stays (d) the same card
8. 8.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) a glass of water (d) turmeric powder
9. 9.🔍 Which is the odd one out? (a) a medicine dropper (b) a suction hook (c) a compass needle (d) a bicycle pump
10. 10.🥛 Which of these works by air pressure? (a) a bicycle pump (b) a magnetic chess set (c) a compass needle (d) a magnetic pin holder
11. 11.⚖️ 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
12. 12.🔮 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) air inside pushes back (d) the bottle is magnetic
13. 13.⚖️ 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) True (b) False
14. 14.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) False (b) True
15. 15.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) air (c) sand (d) water
16. 16.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
17. 17.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
18. 18.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a sink or a bucket (c) a towel (d) a stiff postcard
19. 19.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a magnet (c) a sink or a bucket (d) a balloon
20. 20.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
21. 21.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we measure it (b) we change it (c) we keep it the same
22. 22.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is hot (c) the straw is magnetic (d) air pushes it up
23. 23.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
24. 24.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
25. 25.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
26. 26.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a medicine dropper (d) a magnetic chess set
27. 27.🔍 Which is the odd one out? (a) a fridge magnet (b) a vacuum cleaner (c) a medicine dropper (d) a drinking straw
28. 28.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a battery cell (c) turmeric powder (d) a glass of water
29. 29.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
30. 30.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
31. 31.⚖️ 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) False (b) True
32. 32.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) on a bed (d) over a sink or bucket
33. 33.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to grow plants (c) to make it rain (d) to catch any spills
34. 34.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
35. 35.⚖️ 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
36. 36.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
37. 37.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) it looks nicer (c) water is heavier (d) the card gets wet
38. 38.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) yeast (c) a sink or a bucket (d) a stiff postcard
39. 39.⚖️ 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
40. 40.🔍 Which is the odd one out? (a) a medicine dropper (b) a bicycle pump (c) a magnetic chess set (d) a vacuum cleaner

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