Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 398 · 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 is the odd one out? (a) a suction hook (b) a medicine dropper (c) a bicycle pump (d) a fridge magnet
2. 2.🥛 Which of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a vacuum cleaner (d) a magnetic chess set
3. 3.🧺 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 stiff postcard
4. 4.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) sand (d) smoke
5. 5.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) water is hiding there (c) air inside pushes back (d) the cap is sticky
6. 6.⚖️ 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) whether the card stays (b) how full the glass is (c) the way we turn it (d) the same glass
7. 7.True or false: a suction hook works by magnetism. (a) False (b) True
8. 8.⚖️ 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
9. 9.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a glass of water (d) turmeric powder
10. 10.🔍 Which is the odd one out? (a) a fridge magnet (b) a vacuum cleaner (c) a magnetic chess set (d) a compass needle
11. 11.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a fridge magnet (c) a drinking straw (d) a medicine dropper
12. 12.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a sink or bucket (c) near a plug point (d) over a laptop
13. 13.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a vacuum cleaner (c) a drinking straw (d) a bicycle pump
14. 14.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
15. 15.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
16. 16.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a towel (c) yeast (d) turmeric powder
17. 17.🧺 Which of these is needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a balloon (c) a battery cell (d) turmeric powder
18. 18.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.⚖️ 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) the same glass (b) whether the card stays (c) how full the glass is
20. 20.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a magnetic chess set (d) a bicycle pump
21. 21.⚖️ 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
22. 22.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) friction (c) sunlight (d) magnetism
23. 23.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a sink or a bucket (c) a stiff postcard (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.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
26. 26.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
27. 27.True or false: a compass needle works by air pressure. (a) True (b) False
28. 28.⚖️ 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) True (b) False
29. 29.⚖️ 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 measure it (b) we change it (c) we keep it the same
30. 30.🧺 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 balloon (c) a glass of water (d) a stiff postcard
31. 31.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a balloon (c) a mirror (d) a battery cell
32. 32.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
33. 33.⚖️ 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
34. 34.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is magnetic (c) it is hotter (d) it is heavier
35. 35.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a magnet (c) a sink or a bucket (d) a glass of water
36. 36.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
37. 37.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to make it rain (c) to grow plants (d) to cool the glass
38. 38.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) little air left inside (c) the card gets wet (d) water is heavier
39. 39.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a towel (c) a stiff postcard (d) a sink or a bucket
40. 40.🔍 Which is the odd one out? (a) a medicine dropper (b) a magnetic chess set (c) a magnetic pin holder (d) a fridge magnet

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