Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 271 · 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? Which of these is kept the same? (a) the same glass (b) how full the glass is (c) whether the card stays
2. 2.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
3. 3.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it will not break (c) it is magnetic (d) it is heavier
4. 4.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a drinking straw (c) a suction hook (d) a vacuum cleaner
5. 5.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
6. 6.True or false: a drinking straw works by magnetism. (a) True (b) False
7. 7.⚖️ 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 change it (b) we keep it the same (c) we measure it
8. 8.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
9. 9.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) the cold water (c) air pushing up (d) a magnet
10. 10.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) a battery cell (d) a sink or a bucket
11. 11.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
12. 12.⚖️ 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
13. 13.🧺 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 towel (d) a glass of water
14. 14.🧺 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 towel (d) turmeric powder
15. 15.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
16. 16.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
17. 17.⚖️ 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 same glass (b) whether the card stays (c) how full the glass is (d) the same card
18. 18.⚖️ 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
19. 19.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
20. 20.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a towel (d) a mirror
21. 21.⚖️ 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) the same card (b) how full the glass is (c) the way we turn it (d) the same glass
22. 22.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a magnetic pin holder (d) a bicycle pump
23. 23.🔍 Which is the odd one out? (a) a suction hook (b) a bicycle pump (c) a medicine dropper (d) a compass needle
24. 24.True or false: a bicycle pump works by air pressure. (a) False (b) True
25. 25.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is magnetic (c) the straw is hot (d) air pushes it up
26. 26.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
27. 27.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a sink or a bucket (c) a glass of water (d) a towel
29. 29.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to grow plants (c) to cool the glass (d) to catch any spills
30. 30.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) yeast (c) a sink or a bucket (d) a glass of water
31. 31.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
32. 32.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
33. 33.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
34. 34.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
35. 35.True or false: a suction hook works by air pressure. (a) False (b) True
36. 36.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) smoke (c) water (d) air
37. 37.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
38. 38.⚖️ 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 measure it (b) we keep it the same (c) we change it
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.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a sink or a bucket (c) a towel (d) a stiff postcard

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