Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 382 · 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? True or false: whether the card stays is what we measure. (a) False (b) True
2. 2.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
3. 3.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a compass needle (c) a magnetic pin holder (d) a bicycle pump
4. 4.True or false: a compass needle works by air pressure. (a) False (b) True
5. 5.🔮 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 make it rain (d) to grow plants
6. 6.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) yeast (c) a stiff postcard (d) a glass of water
7. 7.⚖️ 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) how full the glass is (c) whether the card stays (d) the same glass
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 kept the same. (a) True (b) False
9. 9.⚖️ 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 change it (c) we keep it the same
10. 10.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a suction hook (c) a compass needle (d) a magnetic chess set
11. 11.⚖️ 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 keep it the same (b) we measure it (c) we change it
12. 12.True or false: a fridge magnet works by magnetism. (a) True (b) False
13. 13.⚖️ 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 glass (b) the same card (c) the way we turn it (d) how full the glass is
14. 14.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) a medicine dropper (b) a bicycle pump (c) a magnetic pin holder (d) a suction hook
16. 16.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
17. 17.🔍 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 glass breaks (c) the card flies away (d) the water turns to ice
18. 18.True or false: a bicycle pump works by air pressure. (a) True (b) False
19. 19.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a glass of water (c) a stiff postcard (d) a towel
20. 20.True or false: a medicine dropper works by air pressure. (a) False (b) True
21. 21.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a balloon (c) a glass of water (d) a magnet
22. 22.🥛 Which of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a medicine dropper (d) a magnetic chess set
23. 23.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) on a bed (d) over a sink or bucket
24. 24.🔍 Which is the odd one out? (a) a drinking straw (b) a fridge magnet (c) a bicycle pump (d) a suction hook
25. 25.🔍 Which is the odd one out? (a) a magnetic chess set (b) a suction hook (c) a medicine dropper (d) a drinking straw
26. 26.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a towel (c) a mirror (d) a glass of water
27. 27.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) air pushing up (c) a magnet (d) the cold water
28. 28.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) True (b) False
29. 29.⚖️ 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) the same glass (b) whether the card stays (c) how full the glass is
30. 30.⚖️ 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 kept the same. (a) False (b) True
31. 31.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the cap is sticky (c) the bottle is magnetic (d) air inside pushes back
32. 32.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a magnet (c) a battery cell (d) a stiff postcard
33. 33.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) True (b) False
34. 34.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a magnetic chess set (d) a vacuum cleaner
35. 35.⚖️ 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 keep it the same (c) we measure it
36. 36.True or false: a drinking straw works by air pressure. (a) False (b) True
37. 37.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
38. 38.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
39. 39.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a battery cell (d) a towel
40. 40.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure

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