Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 717 · 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.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) on a bed (c) over a laptop (d) near a plug point
2. 2.⚖️ 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 same glass (b) how full the glass is (c) whether the card stays
3. 3.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to cool the glass (c) to catch any spills (d) to grow plants
4. 4.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) smoke (c) water (d) sand
5. 5.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a balloon (c) a stiff postcard (d) a sink or a bucket
6. 6.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a bicycle pump (d) a magnetic chess set
7. 7.⚖️ 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) whether the card stays (c) how full the glass is
8. 8.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a medicine dropper (c) a magnetic chess set (d) a bicycle pump
9. 9.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
10. 10.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) friction (c) air pressure (d) magnetism
11. 11.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a drinking straw (d) a fridge magnet
12. 12.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
13. 13.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is magnetic (d) it is hotter
14. 14.🧺 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 stiff postcard (d) a mirror
15. 15.⚖️ 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
16. 16.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) the bottle is magnetic (c) air inside pushes back (d) water is hiding there
17. 17.⚖️ 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
18. 18.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.🧺 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 stiff postcard
20. 20.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a towel (c) a balloon (d) a battery cell
21. 21.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) air pushes it up (c) juice likes plastic (d) the straw is hot
22. 22.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a bicycle pump (c) a drinking straw (d) a compass needle
23. 23.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) the cold water (c) air pushing up (d) glue on the card
24. 24.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a mirror (b) a glass of water (c) a stiff postcard (d) a towel
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) True (b) False
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a stiff postcard (c) a towel (d) a glass of water
27. 27.⚖️ 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 change it (c) we measure it
28. 28.⚖️ 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
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 kept the same. (a) True (b) False
30. 30.True or false: a suction hook works by magnetism. (a) True (b) False
31. 31.🧺 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
32. 32.⚖️ 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) whether the card stays (b) how full the glass is (c) the same card
33. 33.True or false: a medicine dropper works by magnetism. (a) False (b) True
34. 34.True or false: a bicycle pump works by magnetism. (a) True (b) False
35. 35.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
36. 36.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
37. 37.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
38. 38.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) yeast (c) a battery cell (d) a glass of water
39. 39.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) yeast (d) a sink or a bucket
40. 40.🧺 Which of these is not needed for the card-on-a-glass trick? (a) yeast (b) a sink or a bucket (c) a stiff postcard (d) a glass of water

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