Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 79 · 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 works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a compass needle (d) a vacuum cleaner
2. 2.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
3. 3.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
4. 4.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
5. 5.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) a sink or a bucket (d) yeast
6. 6.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) juice likes plastic (c) air pushes it up (d) the straw is magnetic
7. 7.🧺 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) a sink or a bucket (d) yeast
8. 8.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False
9. 9.⚖️ 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) False (b) True
10. 10.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
11. 11.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) on a bed (d) near a plug point
12. 12.🔍 Which is the odd one out? (a) a drinking straw (b) a medicine dropper (c) a magnetic chess set (d) a suction hook
13. 13.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) a magnet (c) yeast (d) a battery cell
14. 14.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
15. 15.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) it looks nicer (c) little air left inside (d) the card gets wet
16. 16.🥛 Which of these works by magnetism? (a) a suction hook (b) a fridge magnet (c) a medicine dropper (d) a vacuum cleaner
17. 17.True or false: a bicycle pump works by magnetism. (a) True (b) False
18. 18.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a balloon (d) a sink or a bucket
19. 19.🧺 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
20. 20.🔍 Which is the odd one out? (a) a suction hook (b) a drinking straw (c) a bicycle pump (d) a fridge magnet
21. 21.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
22. 22.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
23. 23.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a sink or a bucket (c) a magnet (d) a mirror
24. 24.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) air inside pushes back (c) the bottle is magnetic (d) water is hiding there
25. 25.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a bicycle pump (c) a vacuum cleaner (d) a drinking straw
26. 26.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
27. 27.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) air pressure (c) magnetism (d) friction
28. 28.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is hotter (c) it will not break (d) it is magnetic
29. 29.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
30. 30.⚖️ 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) False (b) True
31. 31.True or false: a bicycle pump works by air pressure. (a) False (b) True
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 same glass”? (a) we measure it (b) we change it (c) we keep it the same
33. 33.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) glue on the card (c) a magnet (d) air pushing up
34. 34.⚖️ 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) True (b) False
35. 35.🧺 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 glass of water (d) a sink or a bucket
36. 36.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
37. 37.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
38. 38.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
39. 39.⚖️ 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) False (b) True
40. 40.True or false: a magnetic chess set works by air pressure. (a) False (b) True

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