Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 135 · 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 is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is hotter (c) it is magnetic (d) it will not break
2. 2.⚖️ 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 kept the same. (a) True (b) False
3. 3.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) yeast (c) a battery cell (d) a mirror
4. 4.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) air pressure (c) magnetism (d) friction
5. 5.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) near a plug point (d) over a sink or bucket
6. 6.⚖️ 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 change it (b) we measure it (c) we keep it the same
7. 7.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
8. 8.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to catch any spills (c) to cool the glass (d) to grow plants
9. 9.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) a magnet (c) glue on the card (d) the cold water
10. 10.🧺 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) yeast (d) a stiff postcard
11. 11.⚖️ 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
12. 12.⚖️ 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) how full the glass is (b) the way we turn it (c) the same card (d) whether the card stays
13. 13.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
14. 14.🔍 Which is the odd one out? (a) a drinking straw (b) a fridge magnet (c) a magnetic pin holder (d) a compass needle
15. 15.⚖️ 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 glass
16. 16.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) air (c) smoke (d) water
17. 17.True or false: a vacuum cleaner works by air pressure. (a) True (b) False
18. 18.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
20. 20.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
21. 21.True or false: a medicine dropper works by air pressure. (a) True (b) False
22. 22.⚖️ 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) the same card (c) how full the glass is
23. 23.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
24. 24.🧺 Which of these is needed for the card-on-a-glass trick? (a) a sink or a bucket (b) turmeric powder (c) a mirror (d) a magnet
25. 25.⚖️ 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
26. 26.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) yeast (c) turmeric powder (d) a battery cell
27. 27.True or false: a magnetic chess set works by magnetism. (a) True (b) False
28. 28.True or false: a suction hook works by magnetism. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a suction hook (d) a fridge magnet
30. 30.🥛 Which of these works by magnetism? (a) a suction hook (b) a magnetic pin holder (c) a drinking straw (d) a medicine dropper
31. 31.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
32. 32.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a magnet (d) a sink or a bucket
33. 33.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
34. 34.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
35. 35.🧺 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 mirror (c) a glass of water (d) a towel
36. 36.⚖️ 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) True (b) False
37. 37.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
38. 38.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a vacuum cleaner (d) a magnetic chess set
39. 39.🔍 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 card flies away (d) the glass breaks
40. 40.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a drinking straw (c) a bicycle pump (d) a vacuum cleaner

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