Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 627 · 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.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) True (b) False
2. 2.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
3. 3.🧺 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) yeast (d) a stiff postcard
4. 4.⚖️ 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 glass (d) whether the card stays
5. 5.🥛 Which of these works by air pressure? (a) a suction hook (b) a magnetic chess set (c) a fridge magnet (d) a magnetic pin holder
6. 6.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
7. 7.⚖️ 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 change it (b) we measure it (c) we keep it the same
8. 8.⚖️ 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) False (b) True
9. 9.⚖️ 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) False (b) True
10. 10.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
11. 11.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) friction (c) air pressure (d) sunlight
12. 12.⚖️ 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 same glass (d) the way we turn it
13. 13.🧺 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 glass of water (d) a sink or a bucket
14. 14.⚖️ 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 what we measure. (a) True (b) False
15. 15.True or false: a medicine dropper works by magnetism. (a) False (b) True
16. 16.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) water is heavier (c) the card gets wet (d) it looks nicer
17. 17.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) yeast (c) a battery cell (d) a magnet
18. 18.⚖️ 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
19. 19.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a balloon (c) a glass of water (d) yeast
20. 20.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) over a laptop (c) near a plug point (d) on a bed
21. 21.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it will not break (c) it is heavier (d) it is magnetic
22. 22.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) juice likes plastic (c) the straw is magnetic (d) the straw is hot
23. 23.True or false: a suction hook works by magnetism. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) a bicycle pump (b) a fridge magnet (c) a drinking straw (d) a suction hook
25. 25.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
26. 26.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
27. 27.True or false: a magnetic chess set works by air pressure. (a) True (b) False
28. 28.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
29. 29.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the water turns to ice (c) the card flies away (d) the card stays on
30. 30.🥛 Which of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a magnetic chess set (d) a vacuum cleaner
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 kept the same. (a) True (b) False
32. 32.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
33. 33.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
34. 34.⚖️ 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
35. 35.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a medicine dropper (d) a magnetic chess set
36. 36.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a sink or a bucket (c) a mirror (d) a towel
37. 37.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
38. 38.🧺 Which of these is needed for the card-on-a-glass trick? (a) a sink or a bucket (b) turmeric powder (c) yeast (d) a balloon
39. 39.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is the one thing we change. (a) True (b) False
40. 40.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) the cold water (c) glue on the card (d) a magnet

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