Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 569 · 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.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a medicine dropper (c) a suction hook (d) a magnetic pin holder
2. 2.⚖️ 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 measure it (c) we change it
3. 3.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card stays on (c) the card flies away (d) the water turns to ice
4. 4.📘 Air presses on everything around us. What is this push called? (a) friction (b) air pressure (c) sunlight (d) magnetism
5. 5.⚖️ 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 keep it the same (b) we measure it (c) we change it
6. 6.🔍 Which is the odd one out? (a) a medicine dropper (b) a bicycle pump (c) a compass needle (d) a drinking straw
7. 7.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) a sink or a bucket (d) a battery cell
8. 8.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a magnetic pin holder (d) a suction hook
9. 9.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a balloon (c) a magnet (d) a stiff postcard
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 what we measure. (a) True (b) False
11. 11.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) water is hiding there (c) air inside pushes back (d) the bottle is magnetic
12. 12.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
13. 13.🧺 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 balloon (d) a towel
14. 14.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
15. 15.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to catch any spills (c) to grow plants (d) to cool the glass
16. 16.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) little air left inside (c) the card gets wet (d) water is heavier
17. 17.True or false: a compass needle works by magnetism. (a) True (b) False
18. 18.🥛 Which of these works by air pressure? (a) a suction hook (b) a fridge magnet (c) a magnetic chess set (d) a magnetic pin holder
19. 19.True or false: a compass needle works by air pressure. (a) True (b) False
20. 20.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) a magnet (c) air pushing up (d) glue on the card
21. 21.🧺 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 glass of water (d) yeast
22. 22.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a battery cell (c) a towel (d) a mirror
23. 23.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
24. 24.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a vacuum cleaner (c) a suction hook (d) a bicycle pump
25. 25.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
26. 26.True or false: a suction hook works by air pressure. (a) False (b) True
27. 27.True or false: a magnet is not needed for the card-on-a-glass trick. (a) True (b) False
28. 28.True or false: a suction hook works by magnetism. (a) True (b) False
29. 29.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a balloon (c) turmeric powder (d) a glass of water
30. 30.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
31. 31.⚖️ 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
32. 32.⚖️ 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) how full the glass is (b) the same glass (c) whether the card stays (d) the same card
33. 33.True or false: yeast is not 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 glass of water (d) a magnet
35. 35.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
36. 36.🧺 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 balloon (d) a towel
37. 37.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
38. 38.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a stiff postcard (c) a towel (d) a glass of water
39. 39.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a bicycle pump (c) a suction hook (d) a magnetic chess set
40. 40.🔍 Which is the odd one out? (a) a suction hook (b) a drinking straw (c) a vacuum cleaner (d) a fridge magnet

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