Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 718 · 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.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) little air left inside (c) it looks nicer (d) the card gets wet
2. 2.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a medicine dropper (d) a magnetic chess set
3. 3.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
4. 4.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
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 kept the same. (a) True (b) False
6. 6.🛟 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 hotter (d) it is magnetic
7. 7.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
8. 8.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) air (c) sand (d) water
9. 9.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
10. 10.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the bottle is magnetic (c) the cap is sticky (d) water is hiding there
11. 11.🥛 Which of these works by magnetism? (a) a compass needle (b) a suction hook (c) a drinking straw (d) a medicine dropper
12. 12.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) True (b) False
13. 13.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) glue on the card (c) the cold water (d) air pushing up
14. 14.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a vacuum cleaner (c) a magnetic chess set (d) a compass needle
15. 15.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a fridge magnet (d) a medicine dropper
16. 16.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) sunlight (c) friction (d) magnetism
17. 17.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a suction hook (d) a magnetic chess set
18. 18.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) air pushes it up (c) the straw is hot (d) juice likes plastic
19. 19.⚖️ 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
20. 20.⚖️ 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 keep it the same (b) we measure it (c) we change it
21. 21.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
22. 22.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
23. 23.🔍 Which is the odd one out? (a) a medicine dropper (b) a vacuum cleaner (c) a compass needle (d) a bicycle pump
24. 24.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a stiff postcard (c) a glass of water (d) a sink or a bucket
25. 25.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
26. 26.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
27. 27.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) yeast (c) a stiff postcard (d) turmeric powder
28. 28.⚖️ 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 way we turn it (b) how full the glass is (c) whether the card stays
29. 29.⚖️ 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 change it (c) we keep it the same
30. 30.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic chess set (c) a vacuum cleaner (d) a medicine dropper
31. 31.🧺 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) a magnet
32. 32.🔍 Which is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a magnetic pin holder (d) a vacuum cleaner
33. 33.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
34. 34.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a drinking straw (c) a compass needle (d) a fridge magnet
35. 35.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
36. 36.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
37. 37.🧺 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 glass of water (c) a battery cell (d) a towel
38. 38.⚖️ 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) how full the glass is (b) the way we turn it (c) whether the card stays (d) the same glass
39. 39.True or false: a medicine dropper works by air pressure. (a) False (b) True
40. 40.⚖️ 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

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