Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 183 · 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.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
2. 2.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
3. 3.🔍 Which is the odd one out? (a) a suction hook (b) a magnetic pin holder (c) a drinking straw (d) a vacuum cleaner
4. 4.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a vacuum cleaner (c) a magnetic pin holder (d) a magnetic chess set
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 towel (c) a mirror (d) a sink or a bucket
6. 6.⚖️ 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) how full the glass is (b) the way we turn it (c) the same glass (d) the same card
7. 7.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to make it rain (c) to cool the glass (d) to catch any spills
8. 8.🔍 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 card flies away (c) the water turns to ice (d) the glass breaks
9. 9.⚖️ 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 measure it (c) we keep it the same
10. 10.⚖️ 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
11. 11.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a bicycle pump (d) a compass needle
12. 12.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is magnetic (c) it will not break (d) it is hotter
13. 13.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) a stiff postcard (d) a battery cell
14. 14.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) on a bed (c) near a plug point (d) over a laptop
15. 15.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a compass needle (d) a suction hook
16. 16.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
17. 17.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
18. 18.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) water is hiding there (c) the cap is sticky (d) air inside pushes back
19. 19.⚖️ 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
20. 20.True or false: a medicine dropper works by air pressure. (a) True (b) False
21. 21.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
22. 22.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
23. 23.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is magnetic (c) air pushes it up (d) the straw is hot
24. 24.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) sand (c) smoke (d) water
25. 25.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) water is heavier (c) the card gets wet (d) little air left inside
26. 26.True or false: a medicine dropper works by magnetism. (a) False (b) True
27. 27.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) air pushing up (c) the cold water (d) a magnet
28. 28.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
29. 29.True or false: a compass needle works by magnetism. (a) False (b) True
30. 30.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
31. 31.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic chess set (c) a magnetic pin holder (d) a drinking straw
32. 32.🧺 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 battery cell (d) a glass of water
33. 33.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
34. 34.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a compass needle (c) a bicycle pump (d) a suction hook
35. 35.🔍 Which is the odd one out? (a) a compass needle (b) a suction hook (c) a bicycle pump (d) a vacuum cleaner
36. 36.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
37. 37.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a battery cell (c) yeast (d) a towel
38. 38.🥛 Which of these works by magnetism? (a) a suction hook (b) a fridge magnet (c) a vacuum cleaner (d) a bicycle pump
39. 39.⚖️ 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
40. 40.🧺 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 sink or a bucket (d) turmeric powder

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