Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 810 · 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.🛟 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
2. 2.True or false: a drinking straw works by magnetism. (a) False (b) True
3. 3.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a mirror (c) a sink or a bucket (d) a stiff postcard
4. 4.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a towel (c) a mirror (d) a magnet
5. 5.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
6. 6.True or false: a magnetic chess set works by magnetism. (a) False (b) True
7. 7.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it will not break (d) it is heavier
8. 8.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic chess set (c) a suction hook (d) a magnetic pin holder
9. 9.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
10. 10.⚖️ 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
11. 11.⚖️ 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) the way we turn it (c) how full the glass is
12. 12.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
13. 13.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) glue on the card (c) the cold water (d) a magnet
14. 14.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a drinking straw (d) a magnetic chess set
15. 15.⚖️ 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 measure it (c) we keep it the same
16. 16.⚖️ 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) the way we turn it (b) whether the card stays (c) the same card (d) how full the glass is
17. 17.True or false: a fridge magnet works by air pressure. (a) True (b) False
18. 18.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the card flies away (c) the water turns to ice (d) the glass breaks
19. 19.⚖️ 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
20. 20.🥛 Which of these works by air pressure? (a) a suction hook (b) a compass needle (c) a magnetic chess set (d) a fridge magnet
21. 21.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
22. 22.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
23. 23.True or false: a suction hook works by magnetism. (a) False (b) True
24. 24.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a sink or a bucket (d) yeast
25. 25.True or false: a bicycle pump works by air pressure. (a) False (b) True
26. 26.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a magnetic pin holder (c) a suction hook (d) a drinking straw
27. 27.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) a glass of water (d) a balloon
28. 28.⚖️ 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) how full the glass is (b) the same card (c) whether the card stays (d) the same glass
29. 29.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
30. 30.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
31. 31.⚖️ 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 what we measure. (a) True (b) False
32. 32.⚖️ 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
33. 33.True or false: a towel is needed for the card-on-a-glass trick. (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 glass of water (c) a towel (d) a mirror
35. 35.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a fridge magnet (c) a medicine dropper (d) a drinking straw
36. 36.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
37. 37.📘 Air presses on everything around us. What is this push called? (a) friction (b) sunlight (c) air pressure (d) magnetism
38. 38.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a drinking straw (c) a medicine dropper (d) a bicycle pump
39. 39.🥛 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
40. 40.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False

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