Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 155 · 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 yeast for the card-on-a-glass trick? (a) needed (b) not needed
2. 2.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
3. 3.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) a balloon (d) a towel
4. 4.⚖️ 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 keep it the same (b) we measure it (c) we change it
5. 5.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
6. 6.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to catch any spills (c) to grow plants (d) to cool the glass
7. 7.⚖️ 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
8. 8.⚖️ 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
9. 9.🥛 Which of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a bicycle pump (d) a magnetic chess set
10. 10.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
11. 11.🔍 Which is the odd one out? (a) a drinking straw (b) a medicine dropper (c) a vacuum cleaner (d) a magnetic chess set
12. 12.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
13. 13.🥛 Which of these works by magnetism? (a) a magnetic pin holder (b) a vacuum cleaner (c) a medicine dropper (d) a drinking straw
14. 14.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
15. 15.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
16. 16.⚖️ 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
17. 17.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) glue on the card (c) air pushing up (d) the cold water
18. 18.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) False (b) True
19. 19.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) little air left inside (c) the card gets wet (d) water is heavier
20. 20.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is magnetic (c) it is heavier (d) it is hotter
21. 21.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) yeast (c) a stiff postcard (d) a glass of water
22. 22.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) sunlight (c) friction (d) air pressure
23. 23.🧺 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) turmeric powder (d) a sink or a bucket
24. 24.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
25. 25.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) a battery cell (d) a towel
26. 26.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) a stiff postcard (d) a mirror
27. 27.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a magnetic pin holder (d) a medicine dropper
28. 28.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False
29. 29.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) smoke (c) water (d) air
30. 30.🔍 Which is the odd one out? (a) a compass needle (b) a vacuum cleaner (c) a bicycle pump (d) a drinking straw
31. 31.True or false: a bicycle pump works by air pressure. (a) False (b) True
32. 32.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a sink or a bucket (c) a stiff postcard (d) a towel
33. 33.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a glass of water (d) turmeric powder
34. 34.⚖️ 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 way we turn it (c) whether the card stays
35. 35.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
36. 36.⚖️ 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 measure it (b) we change it (c) we keep it the same
37. 37.🥤 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
38. 38.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
39. 39.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) over a sink or bucket (d) near a plug point
40. 40.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a fridge magnet (d) a medicine dropper

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