Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 289 · 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.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
2. 2.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) a towel (d) a battery cell
3. 3.🥛 Which of these works by magnetism? (a) a drinking straw (b) a bicycle pump (c) a suction hook (d) a magnetic pin holder
4. 4.⚖️ 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) whether the card stays (c) the same glass (d) the way we turn it
5. 5.⚖️ 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
6. 6.⚖️ 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
7. 7.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) yeast (c) a sink or a bucket (d) a balloon
8. 8.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) friction (c) magnetism (d) sunlight
9. 9.⚖️ 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 change it (c) we measure it
10. 10.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) a balloon (c) yeast (d) a mirror
11. 11.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a sink or bucket (c) over a laptop (d) on a bed
12. 12.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a mirror (b) a towel (c) a glass of water (d) a stiff postcard
13. 13.⚖️ 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 change it (c) we measure it
14. 14.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
15. 15.True or false: a vacuum cleaner works by air pressure. (a) False (b) True
16. 16.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
17. 17.⚖️ 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 card (b) whether the card stays (c) how full the glass is
18. 18.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
19. 19.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
20. 20.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a drinking straw (c) a compass needle (d) a magnetic chess set
22. 22.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
23. 23.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a suction hook (d) a compass needle
24. 24.🔍 Which is the odd one out? (a) a suction hook (b) a medicine dropper (c) a vacuum cleaner (d) a fridge magnet
25. 25.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) yeast (c) a glass of water (d) turmeric powder
26. 26.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) a stiff postcard (d) turmeric powder
27. 27.⚖️ 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
28. 28.🧺 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
29. 29.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a mirror (d) a sink or a bucket
30. 30.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
31. 31.⚖️ 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
32. 32.⚖️ 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 the one thing we change. (a) False (b) True
33. 33.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) glue on the card (c) air pushing up (d) a magnet
34. 34.⚖️ 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
35. 35.🔮 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) the cap is sticky (d) water is hiding there
36. 36.True or false: a compass needle works by magnetism. (a) False (b) True
37. 37.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
38. 38.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
39. 39.⚖️ 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 glass (b) how full the glass is (c) the way we turn it (d) whether the card stays
40. 40.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) yeast (c) a stiff postcard (d) a glass of water

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