Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 525 · 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.⚖️ 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 measure it (b) we change it (c) we keep it the same
2. 2.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) air pressure (c) magnetism (d) friction
3. 3.🛟 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
4. 4.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) smoke (c) air (d) sand
5. 5.⚖️ 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
6. 6.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a sink or a bucket (c) a battery cell (d) turmeric powder
7. 7.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is magnetic (c) it is hotter (d) it will not break
8. 8.⚖️ 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) False (b) True
9. 9.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a medicine dropper (c) a compass needle (d) a suction hook
10. 10.True or false: a magnet is not needed for the card-on-a-glass trick. (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.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a battery cell (c) a towel (d) a sink or a bucket
13. 13.🥛 Which of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a magnetic pin holder (d) a vacuum cleaner
14. 14.⚖️ 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) the way we turn it (c) whether the card stays (d) how full the glass is
15. 15.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
16. 16.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a drinking straw (c) a suction hook (d) a fridge magnet
17. 17.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
18. 18.⚖️ 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
19. 19.🔍 Which is the odd one out? (a) a suction hook (b) a medicine dropper (c) a bicycle pump (d) a compass needle
20. 20.⚖️ 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
21. 21.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
22. 22.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a bicycle pump (c) a magnetic pin holder (d) a suction hook
23. 23.🥛 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
24. 24.⚖️ 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) False (b) True
25. 25.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
26. 26.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a medicine dropper (d) a compass needle
27. 27.🧺 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 glass of water (c) a towel (d) yeast
28. 28.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to catch any spills (c) to grow plants (d) to make it rain
29. 29.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a magnet (c) a glass of water (d) yeast
30. 30.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a sink or a bucket (c) a stiff postcard (d) a glass of water
31. 31.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) the card gets wet (c) water is heavier (d) little air left inside
32. 32.True or false: a suction hook works by magnetism. (a) True (b) False
33. 33.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
34. 34.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a drinking straw (c) a magnetic pin holder (d) a magnetic chess set
35. 35.🔍 Which is the odd one out? (a) a medicine dropper (b) a suction hook (c) a magnetic chess set (d) a vacuum cleaner
36. 36.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a magnetic pin holder (d) a suction hook
37. 37.🔍 Which is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a fridge magnet (d) a vacuum cleaner
38. 38.⚖️ 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 measure it (b) we keep it the same (c) we change it
39. 39.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
40. 40.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False

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