Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 467 · 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 is the odd one out? (a) a medicine dropper (b) a compass needle (c) a bicycle pump (d) a vacuum cleaner
2. 2.⚖️ 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
3. 3.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
4. 4.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
5. 5.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
6. 6.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a magnet (c) a battery cell (d) a glass of water
7. 7.True or false: a drinking straw works by air pressure. (a) False (b) True
8. 8.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
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) whether the card stays (c) how full the glass is (d) the same card
10. 10.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) turmeric powder (c) a sink or a bucket (d) a battery cell
11. 11.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
12. 12.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the water turns to ice (c) the card stays on (d) the glass breaks
13. 13.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a bicycle pump (c) a drinking straw (d) a vacuum cleaner
14. 14.🥛 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
15. 15.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is magnetic (c) it is hotter (d) it will not break
16. 16.True or false: a medicine dropper works by magnetism. (a) False (b) True
17. 17.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to make it rain (c) to catch any spills (d) to cool the glass
18. 18.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
19. 19.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
20. 20.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
21. 21.🛟 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
22. 22.⚖️ 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) the same glass (c) how full the glass is
23. 23.🔍 Which is the odd one out? (a) a magnetic chess set (b) a bicycle pump (c) a suction hook (d) a medicine dropper
24. 24.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) yeast (d) a glass of water
25. 25.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
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 way we turn it”? (a) we measure it (b) we keep it the same (c) we change it
27. 27.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
28. 28.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
29. 29.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a stiff postcard (c) a towel (d) a battery cell
30. 30.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
31. 31.🧺 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 glass of water (d) a balloon
32. 32.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) friction (c) magnetism (d) air pressure
33. 33.🔍 Which is the odd one out? (a) a magnetic chess set (b) a bicycle pump (c) a fridge magnet (d) a magnetic pin holder
34. 34.🧺 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 towel (c) turmeric powder (d) a glass of water
35. 35.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a compass needle (c) a fridge magnet (d) a suction hook
36. 36.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
37. 37.⚖️ 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) how full the glass is (b) the way we turn it (c) whether the card stays
38. 38.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) water is heavier (c) it looks nicer (d) little air left inside
39. 39.🧺 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 sink or a bucket (d) yeast
40. 40.🔍 Which is the odd one out? (a) a medicine dropper (b) a vacuum cleaner (c) a drinking straw (d) a magnetic pin holder

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