Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 308 · 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 fridge magnet (b) a magnetic chess set (c) a magnetic pin holder (d) a medicine dropper
2. 2.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
3. 3.⚖️ 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 way we turn it
4. 4.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a magnetic chess set (c) a vacuum cleaner (d) a fridge magnet
5. 5.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic chess set (c) a drinking straw (d) a fridge magnet
6. 6.⚖️ 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) how full the glass is (b) the way we turn it (c) whether the card stays (d) the same card
7. 7.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic chess set (c) a magnetic pin holder (d) a suction hook
8. 8.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is kept the same. (a) False (b) True
9. 9.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
10. 10.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) the cold water (c) air pushing up (d) glue on the card
11. 11.⚖️ 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) True (b) False
12. 12.⚖️ 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
13. 13.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
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 measure it (b) we keep it the same (c) we change it
15. 15.🥛 Which of these works by air pressure? (a) a compass needle (b) a bicycle pump (c) a fridge magnet (d) a magnetic pin holder
16. 16.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
17. 17.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is the one thing we change. (a) False (b) True
18. 18.True or false: a medicine dropper works by magnetism. (a) True (b) False
19. 19.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) a towel (d) a sink or a bucket
20. 20.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a vacuum cleaner (c) a compass needle (d) a fridge magnet
21. 21.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a mirror (c) a stiff postcard (d) a towel
22. 22.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it is hotter (d) it will not break
23. 23.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) a mirror (d) a towel
24. 24.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
25. 25.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
26. 26.🧺 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 magnet (c) a towel (d) a glass of water
27. 27.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a drinking straw (c) a suction hook (d) a magnetic chess set
28. 28.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) on a bed (d) over a sink or bucket
29. 29.⚖️ 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 measure it (c) we change it
30. 30.True or false: a drinking straw works by air pressure. (a) True (b) False
31. 31.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
32. 32.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
33. 33.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
34. 34.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the glass breaks (c) the card flies away (d) the card stays on
35. 35.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) yeast (c) a sink or a bucket (d) a glass of water
36. 36.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) magnetism (c) friction (d) sunlight
37. 37.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a stiff postcard (c) a battery cell (d) a magnet
38. 38.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic chess set (c) a suction hook (d) a magnetic pin holder
39. 39.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
40. 40.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a battery cell (c) a sink or a bucket (d) a magnet

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