Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 565 · 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? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.⚖️ 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
3. 3.⚖️ 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) False (b) True
4. 4.True or false: a drinking straw works by magnetism. (a) True (b) False
5. 5.⚖️ 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) the same card (c) the same glass (d) how full the glass is
6. 6.🧺 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) turmeric powder (d) a glass of water
7. 7.🧺 Which of these is not needed for the card-on-a-glass trick? (a) turmeric powder (b) a towel (c) a stiff postcard (d) a glass of water
8. 8.🔍 Which is the odd one out? (a) a magnetic chess set (b) a fridge magnet (c) a magnetic pin holder (d) a drinking straw
9. 9.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) smoke (c) air (d) water
10. 10.True or false: a drinking straw works by air pressure. (a) True (b) False
11. 11.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a magnet (c) a towel (d) a balloon
12. 12.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the bottle is magnetic (c) air inside pushes back (d) the cap is sticky
13. 13.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
14. 14.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a suction hook (c) a drinking straw (d) a magnetic pin holder
15. 15.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
16. 16.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
17. 17.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) over a sink or bucket (d) on a bed
18. 18.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is magnetic (c) it is hotter (d) it will not break
19. 19.🥛 Which of these works by air pressure? (a) a bicycle pump (b) a magnetic chess set (c) a compass needle (d) a fridge magnet
20. 20.🧺 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) a battery cell
21. 21.⚖️ 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 keep it the same (b) we measure it (c) we change it
22. 22.🥛 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
23. 23.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a sink or a bucket (c) a balloon (d) a mirror
24. 24.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) a balloon (d) a glass of water
25. 25.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
26. 26.⚖️ 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 way we turn it (b) whether the card stays (c) how full the glass is
27. 27.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a stiff postcard (c) a balloon (d) yeast
28. 28.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
29. 29.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) a suction hook (b) a fridge magnet (c) a vacuum cleaner (d) a drinking straw
31. 31.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) the card gets wet (c) little air left inside (d) water is heavier
32. 32.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a medicine dropper (d) a magnetic chess set
33. 33.True or false: a suction hook works by magnetism. (a) True (b) False
34. 34.🧺 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) a magnet
35. 35.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
36. 36.⚖️ 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) whether the card stays (b) how full the glass is (c) the way we turn it (d) the same glass
37. 37.🥛 Which of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a vacuum cleaner (d) a magnetic chess set
38. 38.🔍 Which is the odd one out? (a) a magnetic chess set (b) a medicine dropper (c) a compass needle (d) a fridge magnet
39. 39.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a sink or a bucket (c) a towel (d) a stiff postcard
40. 40.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) friction (c) air pressure (d) sunlight

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