Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 134 · 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 is the odd one out? (a) a bicycle pump (b) a compass needle (c) a magnetic pin holder (d) a fridge magnet
2. 2.⚖️ 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
3. 3.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a towel (c) a magnet (d) yeast
4. 4.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
5. 5.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) sunlight (c) friction (d) air pressure
6. 6.⚖️ 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) True (b) False
7. 7.🧺 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 magnet (d) a glass of water
8. 8.True or false: a drinking straw works by magnetism. (a) False (b) True
9. 9.🧺 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
10. 10.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a suction hook (c) a bicycle pump (d) a vacuum cleaner
12. 12.⚖️ 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) the same card (c) whether the card stays (d) how full the glass is
13. 13.🥛 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
14. 14.🥤 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
15. 15.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) air (c) smoke (d) sand
16. 16.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
17. 17.🧺 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) yeast (d) a sink or a bucket
18. 18.🧺 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 magnet
19. 19.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
20. 20.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a vacuum cleaner (c) a drinking straw (d) a fridge magnet
21. 21.⚖️ 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) the same card (c) whether the card stays (d) how full the glass is
22. 22.⚖️ 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) True (b) False
23. 23.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) a sink or a bucket (d) a stiff postcard
24. 24.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
25. 25.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
26. 26.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a compass needle (d) a drinking straw
27. 27.⚖️ 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) False (b) True
28. 28.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
29. 29.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a laptop (d) over a sink or bucket
30. 30.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
31. 31.🥛 Does a suction hook 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? True or false: how full the glass is is kept the same. (a) False (b) True
33. 33.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
34. 34.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a towel (c) a glass of water (d) a stiff postcard
35. 35.True or false: a vacuum cleaner works by air pressure. (a) False (b) True
36. 36.True or false: a drinking straw works by air pressure. (a) False (b) True
37. 37.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) the cold water (c) air pushing up (d) glue on the card
38. 38.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
39. 39.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to make it rain (c) to cool the glass (d) to grow plants
40. 40.True or false: a fridge magnet works by air pressure. (a) True (b) False

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