Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 795 · 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 needed for the card-on-a-glass trick? (a) a mirror (b) yeast (c) a magnet (d) a stiff postcard
2. 2.⚖️ 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 same card (b) the same glass (c) how full the glass is (d) the way we turn it
3. 3.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) a towel (d) a stiff postcard
4. 4.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a stiff postcard (c) a sink or a bucket (d) a glass of water
5. 5.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a battery cell (d) a glass of water
6. 6.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) magnetism (c) friction (d) air pressure
7. 7.⚖️ 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 same card (c) how full the glass is (d) whether the card stays
8. 8.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) water is heavier (c) the card gets wet (d) little air left inside
9. 9.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
10. 10.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a stiff postcard (c) a towel (d) a sink or a bucket
11. 11.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a mirror (c) a stiff postcard (d) a sink or a bucket
12. 12.🥛 Which of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a bicycle pump (d) a magnetic chess set
13. 13.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
14. 14.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
15. 15.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
16. 16.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a battery cell (c) a sink or a bucket (d) a mirror
17. 17.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
18. 18.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
19. 19.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic chess set (c) a drinking straw (d) a suction hook
20. 20.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is heavier (c) it is magnetic (d) it is hotter
21. 21.⚖️ 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
22. 22.⚖️ 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 measure it (c) we change it
23. 23.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a vacuum cleaner (d) a magnetic pin holder
24. 24.True or false: a magnetic chess set works by magnetism. (a) False (b) True
25. 25.⚖️ 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
26. 26.True or false: a balloon is not needed for the card-on-a-glass trick. (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 “the way we turn it”? (a) we measure it (b) we change it (c) we keep it the same
28. 28.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a drinking straw (d) a compass needle
29. 29.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
30. 30.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
31. 31.🧺 Do we need a magnet 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 way we turn it is kept the same. (a) True (b) False
33. 33.🥛 Which of these works by magnetism? (a) a suction hook (b) a fridge magnet (c) a drinking straw (d) a vacuum cleaner
34. 34.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
35. 35.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) turmeric powder (c) a mirror (d) a towel
36. 36.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a drinking straw (d) a fridge magnet
37. 37.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a balloon (c) a glass of water (d) yeast
38. 38.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) False (b) True
39. 39.🔮 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 cap is sticky (d) the bottle is magnetic
40. 40.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False

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