Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 148 · 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.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a mirror (d) a towel
2. 2.🔍 Which is the odd one out? (a) a suction hook (b) a bicycle pump (c) a medicine dropper (d) a magnetic chess set
3. 3.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) False (b) True
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 battery cell (d) a glass of water
5. 5.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
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) whether the card stays (b) the way we turn it (c) the same card (d) how full the glass is
7. 7.True or false: a magnetic chess set works by magnetism. (a) True (b) False
8. 8.⚖️ 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 keep it the same (c) we measure it
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 card (b) the same glass (c) the way we turn it (d) whether the card stays
10. 10.⚖️ 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
11. 11.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
12. 12.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a sink or a bucket (d) yeast
13. 13.True or false: a fridge magnet works by magnetism. (a) False (b) True
14. 14.🛟 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
15. 15.⚖️ 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) how full the glass is (b) the same card (c) whether the card stays
16. 16.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
17. 17.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is heavier (c) it is magnetic (d) it is hotter
18. 18.True or false: a suction hook works by air pressure. (a) True (b) False
19. 19.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) the cold water (c) a magnet (d) air pushing up
20. 20.⚖️ 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
21. 21.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a suction hook (d) a compass needle
22. 22.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) a towel (d) turmeric powder
23. 23.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
24. 24.⚖️ 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
25. 25.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) magnetism (c) friction (d) sunlight
26. 26.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
27. 27.⚖️ 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 keep it the same (b) we change it (c) we measure it
28. 28.⚖️ 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
29. 29.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
30. 30.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a mirror (c) a balloon (d) a stiff postcard
31. 31.True or false: a bicycle pump works by air pressure. (a) False (b) True
32. 32.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) air (c) smoke (d) sand
33. 33.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
34. 34.🧺 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 glass of water
35. 35.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
36. 36.🧺 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) a balloon
37. 37.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
38. 38.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
39. 39.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False
40. 40.⚖️ 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 change it (c) we keep it the same

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