Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 637 · 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: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
2. 2.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) yeast (c) a towel (d) a magnet
3. 3.True or false: a suction hook works by air pressure. (a) True (b) False
4. 4.⚖️ 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) the same card (c) the way we turn it (d) how full the glass is
5. 5.⚖️ 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) the same glass (b) the way we turn it (c) whether the card stays (d) the same card
6. 6.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
7. 7.True or false: a magnetic chess set works by magnetism. (a) True (b) False
8. 8.⚖️ 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
9. 9.⚖️ 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 keep it the same (b) we measure it (c) we change it
10. 10.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
11. 11.True or false: a medicine dropper works by magnetism. (a) True (b) False
12. 12.⚖️ 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 what we measure. (a) False (b) True
13. 13.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a mirror (d) a sink or a bucket
14. 14.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) juice likes plastic (c) air pushes it up (d) the straw is hot
15. 15.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) over a laptop (c) near a plug point (d) on a bed
16. 16.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
17. 17.🥛 Which of these works by magnetism? (a) a magnetic pin holder (b) a suction hook (c) a drinking straw (d) a medicine dropper
18. 18.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
19. 19.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a medicine dropper (d) a compass needle
20. 20.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic pin holder (c) a medicine dropper (d) a suction hook
21. 21.🔍 Which is the odd one out? (a) a magnetic chess set (b) a vacuum cleaner (c) a bicycle pump (d) a medicine dropper
22. 22.📘 Air presses on everything around us. What is this push called? (a) friction (b) magnetism (c) air pressure (d) sunlight
23. 23.⚖️ 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 change it (b) we measure it (c) we keep it the same
24. 24.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a towel (d) a balloon
25. 25.🔍 Which is the odd one out? (a) a magnetic chess set (b) a fridge magnet (c) a bicycle pump (d) a compass needle
26. 26.⚖️ 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
27. 27.True or false: a magnetic chess set works by air pressure. (a) False (b) True
28. 28.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is hotter (c) it will not break (d) it is magnetic
29. 29.🔍 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
30. 30.⚖️ 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
31. 31.⚖️ 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
32. 32.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) water is hiding there (c) the bottle is magnetic (d) the cap is sticky
33. 33.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a magnetic pin holder (c) a compass needle (d) a suction hook
34. 34.True or false: a fridge magnet works by magnetism. (a) False (b) True
35. 35.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
36. 36.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a mirror (c) a sink or a bucket (d) a stiff postcard
37. 37.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
38. 38.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
39. 39.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a magnet (c) a sink or a bucket (d) a stiff postcard
40. 40.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a sink or a bucket (d) a magnet

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