Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 791 · 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.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
2. 2.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a compass needle (d) a vacuum cleaner
3. 3.⚖️ 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 what we measure. (a) False (b) True
4. 4.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a drinking straw (c) a suction hook (d) a magnetic pin holder
5. 5.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a battery cell (c) a mirror (d) yeast
6. 6.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a bicycle pump (d) a magnetic chess set
7. 7.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
8. 8.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) magnetism (c) friction (d) air pressure
9. 9.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
10. 10.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
11. 11.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to cool the glass (c) to catch any spills (d) to make it rain
12. 12.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
13. 13.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is hotter (d) it is magnetic
14. 14.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a balloon (c) a sink or a bucket (d) a stiff postcard
15. 15.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
16. 16.⚖️ 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 change it (c) we keep it the same
17. 17.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) the cold water (c) glue on the card (d) a magnet
18. 18.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
19. 19.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a magnetic chess set (c) a bicycle pump (d) a suction hook
20. 20.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a glass of water (d) a mirror
21. 21.⚖️ 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 the one thing we change. (a) True (b) False
22. 22.🧺 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) a magnet
23. 23.🔍 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 card stays on (c) the glass breaks (d) the water turns to ice
24. 24.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a fridge magnet (d) a vacuum cleaner
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a battery cell (c) a glass of water (d) a sink or a bucket
27. 27.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) yeast (c) a stiff postcard (d) a sink or a bucket
28. 28.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a battery cell (c) a magnet (d) a sink or a bucket
29. 29.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) near a plug point (c) over a laptop (d) on a bed
30. 30.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
31. 31.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
32. 32.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
33. 33.🥛 Which of these works by magnetism? (a) a drinking straw (b) a bicycle pump (c) a magnetic chess set (d) a medicine dropper
34. 34.⚖️ 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 keep it the same (b) we measure it (c) we change it
35. 35.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a towel (d) a battery cell
36. 36.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
37. 37.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a medicine dropper (c) a suction hook (d) a bicycle pump
38. 38.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
39. 39.True or false: a compass needle works by air pressure. (a) True (b) False
40. 40.⚖️ 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) True (b) False

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