Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 437 · 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.⚖️ 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
2. 2.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) False (b) True
3. 3.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
4. 4.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
5. 5.True or false: a compass needle works by air pressure. (a) False (b) True
6. 6.⚖️ 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) whether the card stays (c) the same glass
7. 7.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) it looks nicer (c) the card gets wet (d) water is heavier
8. 8.True or false: a bicycle pump works by magnetism. (a) False (b) True
9. 9.🧺 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 glass of water (c) a towel (d) yeast
10. 10.🔍 Which is the odd one out? (a) a suction hook (b) a drinking straw (c) a magnetic chess set (d) a bicycle pump
11. 11.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
12. 12.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to grow plants (c) to make it rain (d) to catch any spills
13. 13.🧺 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) a magnet (d) a sink or a bucket
14. 14.🔍 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
15. 15.🔍 Which is the odd one out? (a) a fridge magnet (b) a drinking straw (c) a vacuum cleaner (d) a bicycle pump
16. 16.🥛 Which of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a magnetic chess set (d) a drinking straw
17. 17.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) on a bed (d) over a sink or bucket
18. 18.⚖️ 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
19. 19.⚖️ 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
20. 20.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) False (b) True
21. 21.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
22. 22.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) the cold water (c) a magnet (d) air pushing up
23. 23.⚖️ 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 what we measure. (a) False (b) True
24. 24.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
25. 25.True or false: a suction hook works by magnetism. (a) True (b) False
26. 26.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
27. 27.🧺 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 glass of water (d) a balloon
28. 28.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
29. 29.True or false: a drinking straw works by magnetism. (a) False (b) True
30. 30.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) magnetism (c) friction (d) sunlight
31. 31.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a balloon (c) a sink or a bucket (d) a stiff postcard
32. 32.⚖️ 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) whether the card stays (c) the way we turn it
33. 33.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
34. 34.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
35. 35.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a towel (c) a sink or a bucket (d) a stiff postcard
36. 36.⚖️ 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) whether the card stays (c) how full the glass is (d) the same glass
37. 37.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) a battery cell (c) a balloon (d) a mirror
38. 38.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a magnetic chess set (c) a drinking straw (d) a vacuum cleaner
39. 39.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
40. 40.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False

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