Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 96 · 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.True or false: a drinking straw works by magnetism. (a) False (b) True
2. 2.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to make it rain (c) to cool the glass (d) to grow plants
3. 3.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
4. 4.⚖️ 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 keep it the same (c) we change it
5. 5.⚖️ 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 glass (b) the same card (c) the way we turn it (d) how full the glass is
6. 6.🛟 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
7. 7.🔍 Which is the odd one out? (a) a medicine dropper (b) a suction hook (c) a drinking straw (d) a fridge magnet
8. 8.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
9. 9.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) sand (d) smoke
10. 10.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a magnet (d) a glass of water
11. 11.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a magnet (c) a balloon (d) a sink or a bucket
12. 12.True or false: a drinking straw works by air pressure. (a) False (b) True
13. 13.True or false: a magnetic chess set works by air pressure. (a) True (b) False
14. 14.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
15. 15.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the glass breaks (c) the water turns to ice (d) the card flies away
16. 16.🔍 Which is the odd one out? (a) a drinking straw (b) a compass needle (c) a bicycle pump (d) a medicine dropper
17. 17.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
18. 18.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a balloon (c) a sink or a bucket (d) a towel
19. 19.🔍 Which is the odd one out? (a) a medicine dropper (b) a suction hook (c) a bicycle pump (d) a magnetic chess set
20. 20.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a magnetic pin holder (d) a suction hook
21. 21.⚖️ 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 change it (b) we measure it (c) we keep it the same
22. 22.True or false: a compass needle works by air pressure. (a) False (b) True
23. 23.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) juice likes plastic (c) the straw is hot (d) air pushes it up
24. 24.True or false: a stiff postcard 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 stiff postcard
26. 26.True or false: a battery cell is not needed for the card-on-a-glass trick. (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.⚖️ 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
29. 29.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) a mirror (c) a balloon (d) a magnet
30. 30.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) a magnet (c) the cold water (d) glue on the card
31. 31.⚖️ 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
32. 32.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a sink or a bucket (c) a stiff postcard (d) a towel
33. 33.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
34. 34.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic chess set (c) a compass needle (d) a fridge magnet
35. 35.🧺 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 towel
36. 36.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a sink or a bucket (d) a balloon
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 works by air pressure? (a) a magnetic pin holder (b) a bicycle pump (c) a magnetic chess set (d) a fridge magnet
39. 39.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it will not break (c) it is heavier (d) it is hotter
40. 40.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure

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