Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 272 · 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 medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
2. 2.⚖️ 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) whether the card stays (b) the way we turn it (c) how full the glass is (d) the same card
3. 3.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to grow plants (c) to catch any spills (d) to make it rain
4. 4.⚖️ 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 change it (c) we keep it the same
5. 5.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
6. 6.True or false: a magnetic chess set works by magnetism. (a) False (b) True
7. 7.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card stays on (c) the card flies away (d) the water turns to ice
8. 8.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
9. 9.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
10. 10.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
11. 11.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) a magnetic chess set (b) a fridge magnet (c) a vacuum cleaner (d) a compass needle
13. 13.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) glue on the card (c) air pushing up (d) a magnet
14. 14.⚖️ 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 change it (b) we keep it the same (c) we measure it
15. 15.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is hot (c) the straw is magnetic (d) air pushes it up
16. 16.🛟 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 hotter (d) it is heavier
17. 17.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a suction hook (c) a compass needle (d) a medicine dropper
18. 18.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) on a bed (c) over a laptop (d) near a plug point
20. 20.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a battery cell (c) a magnet (d) yeast
21. 21.🥛 Which of these works by air pressure? (a) a suction hook (b) a fridge magnet (c) a compass needle (d) a magnetic pin holder
22. 22.True or false: a bicycle pump works by air pressure. (a) False (b) True
23. 23.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) turmeric powder (c) a stiff postcard (d) a glass of water
24. 24.⚖️ 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 measure it (b) we change it (c) we keep it the same
25. 25.⚖️ 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 same glass (d) the way we turn it
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 change it (b) we measure it (c) we keep it the same
27. 27.🧺 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 balloon (d) a stiff postcard
28. 28.⚖️ 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 the one thing we change. (a) False (b) True
29. 29.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) yeast (d) a sink or a bucket
30. 30.True or false: a suction hook works by air pressure. (a) False (b) True
31. 31.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a vacuum cleaner (c) a compass needle (d) a magnetic pin holder
32. 32.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a magnetic pin holder (d) a drinking straw
33. 33.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a magnet (c) a sink or a bucket (d) turmeric powder
34. 34.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a battery cell (c) a stiff postcard (d) turmeric powder
35. 35.True or false: a vacuum cleaner works by air pressure. (a) False (b) True
36. 36.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) little air left inside (c) the card gets wet (d) it looks nicer
37. 37.True or false: a medicine dropper works by air pressure. (a) False (b) True
38. 38.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) False (b) True
39. 39.⚖️ 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) whether the card stays (b) how full the glass is (c) the same card
40. 40.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) magnetism (c) friction (d) air pressure

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