Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 154 · 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.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a balloon (c) yeast (d) a stiff postcard
2. 2.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
3. 3.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic pin holder (c) a magnetic chess set (d) a compass needle
4. 4.⚖️ 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
5. 5.⚖️ 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 change it (b) we measure it (c) we keep it the same
6. 6.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a sink or bucket (c) near a plug point (d) over a laptop
7. 7.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) air pushing up (c) glue on the card (d) a magnet
8. 8.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) water is heavier (c) little air left inside (d) the card gets wet
9. 9.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) yeast (c) a sink or a bucket (d) a towel
10. 10.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) a stiff postcard (d) a sink or a bucket
11. 11.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
12. 12.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) air pushes it up (c) juice likes plastic (d) the straw is hot
13. 13.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
14. 14.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
15. 15.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
16. 16.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
17. 17.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) turmeric powder (c) a sink or a bucket (d) a towel
18. 18.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a glass of water (c) a towel (d) a stiff postcard
19. 19.🔍 Which is the odd one out? (a) a medicine dropper (b) a drinking straw (c) a suction hook (d) a magnetic pin holder
20. 20.True or false: a drinking straw works by magnetism. (a) True (b) False
21. 21.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) yeast (c) a towel (d) a mirror
22. 22.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a sink or a bucket (d) a magnet
23. 23.⚖️ 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) the same card (c) how full the glass is (d) the way we turn it
24. 24.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) a glass of water (d) turmeric powder
25. 25.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
26. 26.🔍 Which is the odd one out? (a) a magnetic chess set (b) a medicine dropper (c) a drinking straw (d) a bicycle pump
27. 27.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card stays on (c) the water turns to ice (d) the card flies away
28. 28.⚖️ 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
29. 29.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
30. 30.⚖️ 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 same glass (c) how full the glass is
31. 31.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
32. 32.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a vacuum cleaner (c) a fridge magnet (d) a drinking straw
33. 33.📘 Air presses on everything around us. What is this push called? (a) friction (b) sunlight (c) air pressure (d) magnetism
34. 34.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a mirror (c) a glass of water (d) a magnet
35. 35.🧺 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 towel
36. 36.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
37. 37.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
38. 38.⚖️ 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 kept the same. (a) True (b) False
39. 39.⚖️ 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 keep it the same (c) we measure it
40. 40.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic chess set (c) a fridge magnet (d) a medicine dropper

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