Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 616 · 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 bicycle pump works by magnetism. (a) True (b) False
2. 2.🔮 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
3. 3.⚖️ 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 change it (c) we measure it
4. 4.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) a magnet (d) a sink or a bucket
5. 5.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) over a laptop (c) near a plug point (d) on a bed
6. 6.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) friction (c) magnetism (d) air pressure
7. 7.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) yeast (c) a sink or a bucket (d) a towel
8. 8.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
9. 9.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a magnetic pin holder (d) a medicine dropper
10. 10.⚖️ 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 kept the same. (a) True (b) False
11. 11.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
12. 12.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) turmeric powder (c) a glass of water (d) a towel
14. 14.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a glass of water (d) turmeric powder
15. 15.🧺 Which of these is not needed for the card-on-a-glass trick? (a) yeast (b) a stiff postcard (c) a glass of water (d) a sink or a bucket
16. 16.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) a medicine dropper (b) a suction hook (c) a fridge magnet (d) a drinking straw
18. 18.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) water (c) air (d) smoke
19. 19.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
20. 20.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
21. 21.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is hotter (c) it is heavier (d) it is magnetic
22. 22.⚖️ 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 what we measure. (a) True (b) False
23. 23.True or false: a drinking straw works by air pressure. (a) False (b) True
24. 24.🧺 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 towel (c) a battery cell (d) a glass of water
25. 25.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
26. 26.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a suction hook (d) a fridge magnet
27. 27.True or false: a medicine dropper works by magnetism. (a) False (b) True
28. 28.🔍 Which is the odd one out? (a) a suction hook (b) a magnetic chess set (c) a magnetic pin holder (d) a compass needle
29. 29.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a drinking straw (c) a suction hook (d) a bicycle pump
30. 30.True or false: a fridge magnet works by air pressure. (a) False (b) True
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 same card”? (a) we change it (b) we measure it (c) we keep it the same
32. 32.True or false: a magnetic chess set works by air pressure. (a) True (b) False
33. 33.True or false: a suction hook works by air pressure. (a) False (b) True
34. 34.⚖️ 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 measure it (b) we keep it the same (c) we change it
35. 35.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) turmeric powder (c) a balloon (d) yeast
36. 36.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
37. 37.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a magnet (c) a balloon (d) a glass of water
38. 38.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
39. 39.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
40. 40.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) air pushing up (c) glue on the card (d) the cold water

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