Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 333 · 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.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
2. 2.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a medicine dropper (d) a compass needle
3. 3.⚖️ 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 keep it the same (b) we change it (c) we measure it
4. 4.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a magnet (c) a stiff postcard (d) a towel
5. 5.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
6. 6.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a towel (c) a battery cell (d) a glass of water
7. 7.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
8. 8.🧺 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 magnet (d) a sink or a bucket
9. 9.⚖️ 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) how full the glass is (b) the same glass (c) whether the card stays
10. 10.⚖️ 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) the same card (c) the way we turn it (d) the same glass
11. 11.⚖️ 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 measure it (c) we change it
12. 12.⚖️ 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
13. 13.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
14. 14.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
15. 15.⚖️ 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
16. 16.⚖️ 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 way we turn it (b) how full the glass is (c) the same card (d) whether the card stays
17. 17.True or false: a suction hook works by magnetism. (a) False (b) True
18. 18.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) magnetism (c) sunlight (d) friction
20. 20.⚖️ 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) how full the glass is (b) whether the card stays (c) the same card
21. 21.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) the cold water (c) glue on the card (d) air pushing up
22. 22.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
23. 23.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) True (b) False
24. 24.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a sink or a bucket (c) a stiff postcard (d) a towel
25. 25.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) water is heavier (c) the card gets wet (d) little air left inside
26. 26.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) juice likes plastic (c) the straw is magnetic (d) air pushes it up
27. 27.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a vacuum cleaner (c) a bicycle pump (d) a drinking straw
29. 29.🔍 Which is the odd one out? (a) a medicine dropper (b) a fridge magnet (c) a bicycle pump (d) a suction hook
30. 30.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
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 towel (c) a mirror (d) a glass of water
32. 32.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
33. 33.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
34. 34.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
35. 35.🧺 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 glass of water (c) a towel (d) a battery cell
36. 36.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) False (b) True
37. 37.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a drinking straw (c) a magnetic chess set (d) a magnetic pin holder
38. 38.⚖️ 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
39. 39.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
40. 40.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a glass of water (c) a balloon (d) yeast

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