Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 823 · 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.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) smoke (c) sand (d) water
2. 2.⚖️ 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
3. 3.True or false: a magnetic chess set works by air pressure. (a) False (b) True
4. 4.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
5. 5.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a towel (c) a sink or a bucket (d) a stiff postcard
6. 6.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
7. 7.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
8. 8.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic chess set (c) a fridge magnet (d) a vacuum cleaner
9. 9.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
10. 10.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
11. 11.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is magnetic (c) air pushes it up (d) the straw is hot
12. 12.⚖️ 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
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a battery cell (c) a glass of water (d) a stiff postcard
14. 14.🔮 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
15. 15.⚖️ 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 measure it (c) we keep it the same
16. 16.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) near a plug point (d) on a bed
17. 17.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) friction (c) sunlight (d) magnetism
18. 18.🧺 Which of these is needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a battery cell (c) a balloon (d) turmeric powder
19. 19.🔍 Which is the odd one out? (a) a medicine dropper (b) a suction hook (c) a fridge magnet (d) a bicycle pump
20. 20.⚖️ 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 way we turn it (c) how full the glass is (d) the same card
21. 21.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
22. 22.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
23. 23.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a stiff postcard (c) turmeric powder (d) a battery cell
24. 24.🥛 Which of these works by air pressure? (a) a compass needle (b) a medicine dropper (c) a magnetic pin holder (d) a fridge magnet
25. 25.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) yeast (d) a stiff postcard
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 the one thing we change. (a) True (b) False
27. 27.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
28. 28.⚖️ 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
29. 29.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a towel (c) a balloon (d) yeast
30. 30.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
31. 31.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
32. 32.⚖️ 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 keep it the same (b) we measure it (c) we change it
33. 33.🧺 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 balloon (d) a glass of water
34. 34.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) yeast (c) a glass of water (d) a stiff postcard
35. 35.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) turmeric powder (c) a sink or a bucket (d) a towel
36. 36.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the glass breaks (c) the card flies away (d) the card stays on
37. 37.🧺 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 stiff postcard (d) a magnet
38. 38.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
39. 39.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) the cold water (c) a magnet (d) air pushing up
40. 40.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a compass needle (d) a drinking straw

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