Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 632 · 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.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) air (d) sand
2. 2.📘 Air presses on everything around us. What is this push called? (a) friction (b) magnetism (c) sunlight (d) air pressure
3. 3.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
4. 4.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
5. 5.True or false: a compass needle works by magnetism. (a) False (b) True
6. 6.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
7. 7.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a laptop (d) over a sink or bucket
8. 8.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the water turns to ice (c) the card stays on (d) the glass breaks
9. 9.⚖️ 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
10. 10.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a vacuum cleaner (c) a bicycle pump (d) a drinking straw
11. 11.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a balloon (d) a glass of water
12. 12.🥛 Which of these works by magnetism? (a) a drinking straw (b) a magnetic pin holder (c) a medicine dropper (d) a suction hook
13. 13.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a towel (c) yeast (d) a balloon
14. 14.True or false: a drinking straw works by magnetism. (a) True (b) False
15. 15.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
16. 16.⚖️ 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
17. 17.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a battery cell (c) a balloon (d) a sink or a bucket
18. 18.⚖️ 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 change it (b) we keep it the same (c) we measure it
19. 19.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
20. 20.True or false: a suction hook works by air pressure. (a) False (b) True
21. 21.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) turmeric powder (d) a stiff postcard
22. 22.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
23. 23.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
24. 24.True or false: a compass needle works by air pressure. (a) False (b) True
25. 25.⚖️ 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 measure it (b) we keep it the same (c) we change it
26. 26.⚖️ 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 same card
27. 27.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a battery cell (c) a glass of water (d) yeast
28. 28.⚖️ 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 same card (b) whether the card stays (c) the same glass (d) how full the glass is
29. 29.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a stiff postcard (c) a magnet (d) a mirror
30. 30.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
31. 31.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a magnetic chess set (c) a drinking straw (d) a fridge magnet
32. 32.True or false: a medicine dropper works by air pressure. (a) False (b) True
33. 33.🥛 Which of these works by air pressure? (a) a drinking straw (b) a magnetic pin holder (c) a compass needle (d) a magnetic chess set
34. 34.🧺 Do we need a mirror 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 stiff postcard (b) a towel (c) a sink or a bucket (d) a magnet
36. 36.🔍 Which is the odd one out? (a) a medicine dropper (b) a magnetic chess set (c) a drinking straw (d) a suction hook
37. 37.True or false: a bicycle pump works by magnetism. (a) False (b) True
38. 38.True or false: a vacuum cleaner works by air pressure. (a) False (b) True
39. 39.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it is heavier (d) it will not break
40. 40.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True

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