Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 314 · 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.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
2. 2.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a magnetic chess set (d) a drinking straw
3. 3.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a balloon (d) a sink or a bucket
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) how full the glass is (b) whether the card stays (c) the way we turn it (d) the same glass
5. 5.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
6. 6.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) sand (d) air
7. 7.True or false: a battery cell is not needed for the card-on-a-glass trick. (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: the same card is what we measure. (a) False (b) True
9. 9.📘 Air presses on everything around us. What is this push called? (a) friction (b) air pressure (c) magnetism (d) sunlight
10. 10.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is the one thing we change. (a) True (b) False
11. 11.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
12. 12.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) air pushes it up (c) the straw is magnetic (d) the straw is hot
13. 13.🥛 Which of these works by air pressure? (a) a drinking straw (b) a magnetic chess set (c) a compass needle (d) a fridge magnet
14. 14.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) True (b) False
15. 15.🥛 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
16. 16.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
17. 17.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a compass needle (c) a vacuum cleaner (d) a fridge magnet
18. 18.🔍 Which is the odd one out? (a) a medicine dropper (b) a fridge magnet (c) a drinking straw (d) a suction hook
19. 19.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) a stiff postcard (d) a towel
20. 20.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a towel (c) a glass of water (d) a sink or a bucket
21. 21.🔍 Which is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a suction hook (d) a fridge magnet
22. 22.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a magnetic chess set (d) a suction hook
23. 23.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
24. 24.🧺 Which of these is not needed for the card-on-a-glass trick? (a) turmeric powder (b) a sink or a bucket (c) a stiff postcard (d) a glass of water
25. 25.⚖️ 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 kept the same. (a) False (b) True
26. 26.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
27. 27.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
28. 28.⚖️ 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 change it (b) we keep it the same (c) we measure it
29. 29.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) True (b) False
30. 30.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
31. 31.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the card stays on (c) the glass breaks (d) the water turns to ice
32. 32.True or false: a suction hook works by magnetism. (a) True (b) False
33. 33.⚖️ 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) whether the card stays (c) the same card (d) the way we turn it
34. 34.🔮 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) water is hiding there (d) the cap is sticky
35. 35.⚖️ 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
36. 36.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
37. 37.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a vacuum cleaner (c) a magnetic chess set (d) a bicycle pump
38. 38.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
39. 39.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
40. 40.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism

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