Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 757 · 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.True or false: a medicine dropper works by air pressure. (a) False (b) True
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) True (b) False
3. 3.True or false: a drinking straw works by air pressure. (a) False (b) True
4. 4.🛟 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
5. 5.⚖️ 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 kept the same. (a) True (b) False
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) False (b) True
7. 7.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a suction hook (c) a compass needle (d) a fridge magnet
8. 8.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to grow plants (c) to catch any spills (d) to make it rain
9. 9.⚖️ 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) whether the card stays (c) how full the glass is (d) the same card
10. 10.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) water (c) air (d) smoke
11. 11.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a glass of water (c) a stiff postcard (d) a towel
12. 12.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
13. 13.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a balloon (d) a sink or a bucket
14. 14.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) air pressure (c) magnetism (d) friction
15. 15.⚖️ 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
16. 16.True or false: a drinking straw works by magnetism. (a) False (b) True
17. 17.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
18. 18.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a towel (c) a glass of water (d) a sink or a bucket
19. 19.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a magnet (d) a towel
20. 20.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a drinking straw (d) a compass needle
21. 21.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a magnet (c) a towel (d) a sink or a bucket
22. 22.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
23. 23.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a glass of water (c) a battery cell (d) yeast
24. 24.True or false: a magnet is not needed for the card-on-a-glass trick. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) a fridge magnet (b) a bicycle pump (c) a compass needle (d) a magnetic chess set
26. 26.🧺 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 glass of water (d) a stiff postcard
27. 27.🧺 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 glass of water (d) a battery cell
28. 28.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is magnetic (c) it will not break (d) it is hotter
29. 29.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a towel (c) a balloon (d) turmeric powder
30. 30.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
31. 31.⚖️ 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
32. 32.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
33. 33.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the water turns to ice (c) the glass breaks (d) the card flies away
34. 34.True or false: a bicycle pump works by air pressure. (a) True (b) False
35. 35.🥛 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
36. 36.🔍 Which is the odd one out? (a) a medicine dropper (b) a drinking straw (c) a vacuum cleaner (d) a magnetic chess set
37. 37.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a suction hook (c) a drinking straw (d) a vacuum cleaner
38. 38.⚖️ 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 way we turn it (b) how full the glass is (c) the same glass (d) whether the card stays
39. 39.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a medicine dropper (c) a suction hook (d) a compass needle
40. 40.True or false: a magnetic pin holder works by magnetism. (a) True (b) False

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