Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 958 · 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: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
2. 2.🧺 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 battery cell (c) a towel (d) a glass of water
3. 3.⚖️ 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 keep it the same (c) we measure it
4. 4.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a magnetic pin holder (d) a bicycle pump
5. 5.⚖️ 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
6. 6.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) air (c) water (d) smoke
7. 7.True or false: a medicine dropper works by air pressure. (a) True (b) False
8. 8.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a glass of water (c) a stiff postcard (d) a towel
9. 9.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a towel (c) a glass of water (d) a magnet
10. 10.⚖️ 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) the same glass (d) how full the glass is
11. 11.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
12. 12.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
13. 13.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) turmeric powder (c) a magnet (d) a battery cell
14. 14.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) water is heavier (c) little air left inside (d) the card gets wet
15. 15.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a drinking straw (c) a fridge magnet (d) a medicine dropper
16. 16.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a drinking straw (d) a compass needle
17. 17.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
18. 18.⚖️ 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
19. 19.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a magnet (c) a glass of water (d) a mirror
20. 20.🔍 Which is the odd one out? (a) a suction hook (b) a magnetic pin holder (c) a medicine dropper (d) a bicycle pump
21. 21.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a suction hook (d) a compass needle
22. 22.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
23. 23.True or false: a fridge magnet works by air pressure. (a) True (b) False
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 towel (c) turmeric powder (d) a sink or a bucket
25. 25.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a stiff postcard (c) a glass of water (d) a towel
26. 26.⚖️ 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) True (b) False
27. 27.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) air pushing up (c) the cold water (d) glue on the card
28. 28.🥛 Which of these works by magnetism? (a) a drinking straw (b) a vacuum cleaner (c) a compass needle (d) a bicycle pump
29. 29.⚖️ 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 measure it (b) we keep it the same (c) we change it
30. 30.True or false: a drinking straw works by magnetism. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a magnetic chess set (c) a compass needle (d) a drinking straw
32. 32.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) air pressure (c) friction (d) magnetism
33. 33.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
34. 34.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to cool the glass (c) to grow plants (d) to catch any spills
35. 35.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic chess set (c) a medicine dropper (d) a magnetic pin holder
36. 36.⚖️ 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) how full the glass is (b) the same card (c) whether the card stays
37. 37.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) the bottle is magnetic (c) air inside pushes back (d) water is hiding there
38. 38.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a drinking straw (c) a fridge magnet (d) a suction hook
39. 39.⚖️ 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 card (b) whether the card stays (c) the way we turn it (d) how full the glass is
40. 40.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) turmeric powder (c) a towel (d) a magnet

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