Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 324 · 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.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to grow plants (c) to catch any spills (d) to cool the glass
2. 2.🔍 Which is the odd one out? (a) a medicine dropper (b) a bicycle pump (c) a drinking straw (d) a fridge magnet
3. 3.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a glass of water (c) a stiff postcard (d) a sink or a bucket
4. 4.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a sink or a bucket (d) a mirror
5. 5.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
6. 6.⚖️ 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) True (b) False
7. 7.⚖️ 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 glass (b) how full the glass is (c) the same card (d) whether the card stays
8. 8.True or false: a suction hook works by magnetism. (a) True (b) False
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) turmeric powder (c) a stiff postcard (d) a glass of water
10. 10.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
11. 11.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
12. 12.🛟 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
13. 13.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a suction hook (c) a vacuum cleaner (d) a fridge magnet
14. 14.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) glue on the card (c) the cold water (d) a magnet
15. 15.🔍 Which is the odd one out? (a) a compass needle (b) a medicine dropper (c) a magnetic pin holder (d) a fridge magnet
16. 16.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it will not break (c) it is magnetic (d) it is heavier
17. 17.True or false: a drinking straw works by air pressure. (a) False (b) True
18. 18.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a suction hook (d) a magnetic chess set
19. 19.🧺 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) yeast (d) a stiff postcard
20. 20.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) False (b) True
21. 21.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
22. 22.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a sink or a bucket (d) a mirror
23. 23.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) turmeric powder (d) a glass of water
24. 24.🔍 Which is the odd one out? (a) a bicycle pump (b) a medicine dropper (c) a magnetic chess set (d) a suction hook
25. 25.⚖️ 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
26. 26.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a balloon (c) a glass of water (d) a sink or a bucket
27. 27.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the water turns to ice (c) the card stays on (d) the card flies away
28. 28.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
29. 29.🔍 Which is the odd one out? (a) a compass needle (b) a vacuum cleaner (c) a magnetic pin holder (d) a fridge magnet
30. 30.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a sink or a bucket (c) yeast (d) a magnet
31. 31.⚖️ 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
32. 32.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a glass of water (c) a mirror (d) turmeric powder
33. 33.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
34. 34.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a drinking straw (c) a bicycle pump (d) a magnetic chess set
35. 35.⚖️ 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
36. 36.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we keep it the same (b) we change it (c) we measure it
37. 37.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) a stiff postcard (d) a sink or a bucket
38. 38.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
39. 39.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
40. 40.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a stiff postcard (c) a mirror (d) a magnet

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