Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 546 · 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.⚖️ 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 kept the same. (a) True (b) False
2. 2.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
3. 3.⚖️ 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
4. 4.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
5. 5.⚖️ 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 what we measure. (a) False (b) True
6. 6.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a compass needle (c) a medicine dropper (d) a fridge magnet
7. 7.⚖️ 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 way we turn it (b) whether the card stays (c) the same card (d) the same glass
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 kept the same. (a) False (b) True
9. 9.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
10. 10.🧺 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 mirror
11. 11.⚖️ 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
12. 12.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a vacuum cleaner (c) a compass needle (d) a fridge magnet
13. 13.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is hot (c) air pushes it up (d) the straw is magnetic
14. 14.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
15. 15.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
16. 16.⚖️ 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
17. 17.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) near a plug point (c) over a laptop (d) over a sink or bucket
18. 18.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we keep it the same (b) we measure it (c) we change it
19. 19.🔍 Which is the odd one out? (a) a suction hook (b) a bicycle pump (c) a magnetic chess set (d) a medicine dropper
20. 20.True or false: a medicine dropper works by air pressure. (a) False (b) True
21. 21.🔍 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 water turns to ice (d) the glass breaks
22. 22.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is hotter (c) it is heavier (d) it is magnetic
23. 23.⚖️ 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 what we measure. (a) False (b) True
24. 24.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) air inside pushes back (c) the bottle is magnetic (d) the cap is sticky
25. 25.🥛 Which of these works by magnetism? (a) a drinking straw (b) a vacuum cleaner (c) a medicine dropper (d) a fridge magnet
26. 26.True or false: a magnetic chess set works by air pressure. (a) True (b) False
27. 27.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
28. 28.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) turmeric powder (c) a magnet (d) a sink or a bucket
29. 29.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) a magnet (c) glue on the card (d) the cold water
30. 30.🧺 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
31. 31.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
32. 32.⚖️ 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
33. 33.🧺 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 sink or a bucket (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) a glass of water (c) a towel (d) yeast
35. 35.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) friction (c) air pressure (d) sunlight
36. 36.🔍 Which is the odd one out? (a) a compass needle (b) a bicycle pump (c) a suction hook (d) a drinking straw
37. 37.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
38. 38.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
39. 39.True or false: a vacuum cleaner works by air pressure. (a) True (b) False
40. 40.⚖️ 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 measure it (c) we keep it the same

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