Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 257 · 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.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a compass needle (c) a fridge magnet (d) a magnetic pin holder
2. 2.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
3. 3.True or false: a suction hook works by magnetism. (a) False (b) True
4. 4.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
5. 5.🔮 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 grow plants (d) to cool the glass
6. 6.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) over a sink or bucket (d) on a bed
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 way we turn it”? (a) we keep it the same (b) we change it (c) we measure it
8. 8.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
9. 9.⚖️ 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) how full the glass is (c) whether the card stays (d) the same card
10. 10.⚖️ 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 card (b) the same glass (c) the way we turn it (d) whether the card stays
11. 11.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a magnetic pin holder (c) a compass needle (d) a drinking straw
12. 12.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
13. 13.🧺 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 magnet (c) a stiff postcard (d) a glass of water
14. 14.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) a drinking straw (b) a vacuum cleaner (c) a magnetic pin holder (d) a medicine dropper
16. 16.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
17. 17.🥛 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
18. 18.True or false: a drinking straw works by magnetism. (a) False (b) True
19. 19.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
20. 20.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a glass of water (c) a sink or a bucket (d) yeast
21. 21.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) air inside pushes back (c) the cap is sticky (d) water is hiding there
22. 22.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
23. 23.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) smoke (d) sand
24. 24.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) the straw is hot (c) air pushes it up (d) juice likes plastic
25. 25.🧺 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 balloon (d) a glass of water
26. 26.⚖️ 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
27. 27.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
28. 28.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) a magnet (c) air pushing up (d) glue on the card
29. 29.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the glass breaks (c) the card stays on (d) the card flies away
30. 30.🛟 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
31. 31.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a vacuum cleaner (c) a compass needle (d) a suction hook
32. 32.⚖️ 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
33. 33.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) a magnetic chess set (b) a magnetic pin holder (c) a suction hook (d) a fridge magnet
35. 35.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
36. 36.True or false: a medicine dropper works by magnetism. (a) True (b) False
37. 37.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
38. 38.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a fridge magnet (d) a vacuum cleaner
39. 39.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a magnetic pin holder (d) a vacuum cleaner
40. 40.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed

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