Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 645 · 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 towel is needed for the card-on-a-glass trick. (a) True (b) False
2. 2.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
3. 3.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a fridge magnet (c) a vacuum cleaner (d) a drinking straw
4. 4.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a stiff postcard (c) a glass of water (d) yeast
5. 5.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a magnet (c) a stiff postcard (d) a glass of water
6. 6.🥛 Which of these works by magnetism? (a) a magnetic pin holder (b) a suction hook (c) a bicycle pump (d) a drinking straw
7. 7.🥛 Which of these works by magnetism? (a) a drinking straw (b) a bicycle pump (c) a magnetic chess set (d) a vacuum cleaner
8. 8.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) air (c) smoke (d) water
9. 9.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a stiff postcard (c) a glass of water (d) a towel
10. 10.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a towel (c) a glass of water (d) a battery cell
11. 11.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
12. 12.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) over a sink or bucket (d) near a plug point
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 measure it (b) we keep it the same (c) we change it
14. 14.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a medicine dropper (d) a compass needle
15. 15.True or false: a bicycle pump works by magnetism. (a) True (b) False
16. 16.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a vacuum cleaner (c) a magnetic chess set (d) a compass needle
17. 17.🧺 Do we need a towel 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? What do we do with “whether the card stays”? (a) we measure it (b) we keep it the same (c) we change it
19. 19.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a magnet (c) yeast (d) a glass of water
20. 20.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is hotter (c) it is heavier (d) it is magnetic
21. 21.🔍 Which is the odd one out? (a) a suction hook (b) a drinking straw (c) a medicine dropper (d) a fridge magnet
22. 22.⚖️ 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 what we measure. (a) False (b) True
23. 23.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) it looks nicer (c) little air left inside (d) water is heavier
24. 24.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
25. 25.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
26. 26.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
27. 27.🧺 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 towel (d) a mirror
28. 28.True or false: a magnetic chess set works by magnetism. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) a suction hook (b) a magnetic chess set (c) a magnetic pin holder (d) a fridge magnet
30. 30.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a vacuum cleaner (d) a magnetic pin holder
31. 31.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
32. 32.⚖️ 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
33. 33.🧺 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) yeast
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 kept the same. (a) False (b) True
35. 35.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) friction (c) magnetism (d) air pressure
36. 36.⚖️ 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) whether the card stays (c) how full the glass is (d) the way we turn it
37. 37.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
38. 38.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) air inside pushes back (c) water is hiding there (d) the cap is sticky
39. 39.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) turmeric powder (d) a glass of water
40. 40.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a towel (c) turmeric powder (d) a mirror

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