Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 596 · 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? Which of these is what we measure? (a) whether the card stays (b) how full the glass is (c) the same glass (d) the way we turn it
2. 2.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
3. 3.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) on a bed (c) near a plug point (d) over a sink or bucket
4. 4.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the bottle is magnetic (c) water is hiding there (d) the cap is sticky
5. 5.⚖️ 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
6. 6.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
7. 7.True or false: a medicine dropper works by magnetism. (a) False (b) True
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 measure it (b) we change it (c) we keep it the same
9. 9.⚖️ 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) True (b) False
10. 10.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is magnetic (c) it is heavier (d) it will not break
11. 11.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to make it rain (c) to cool the glass (d) to grow plants
12. 12.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
13. 13.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
14. 14.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
15. 15.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a glass of water (c) a towel (d) a sink or a bucket
16. 16.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) little air left inside (c) it looks nicer (d) water is heavier
17. 17.⚖️ 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 the one thing we change. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) a medicine dropper (b) a vacuum cleaner (c) a compass needle (d) a bicycle pump
19. 19.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) air pushing up (c) the cold water (d) glue on the card
20. 20.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
21. 21.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
22. 22.⚖️ 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 change it (b) we measure it (c) we keep it the same
23. 23.True or false: a suction hook works by air pressure. (a) False (b) True
24. 24.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) turmeric powder (c) a sink or a bucket (d) a stiff postcard
25. 25.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
26. 26.True or false: a bicycle pump works by air pressure. (a) True (b) False
27. 27.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
28. 28.🧺 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 sink or a bucket (d) a mirror
29. 29.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
30. 30.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) sunlight (c) magnetism (d) friction
31. 31.🧺 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 stiff postcard (c) a towel (d) turmeric powder
32. 32.🥛 Which of these works by air pressure? (a) a compass needle (b) a bicycle pump (c) a magnetic pin holder (d) a fridge magnet
33. 33.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
34. 34.⚖️ 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
35. 35.True or false: a vacuum cleaner works by air pressure. (a) False (b) True
36. 36.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a sink or a bucket (d) a magnet
37. 37.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a magnet (c) a stiff postcard (d) a balloon
38. 38.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
39. 39.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
40. 40.🧺 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 stiff postcard (c) a towel (d) a battery cell

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