Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 303 · 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 balloon for the card-on-a-glass trick? (a) not needed (b) needed
2. 2.🔍 Which is the odd one out? (a) a suction hook (b) a fridge magnet (c) a magnetic chess set (d) a magnetic pin holder
3. 3.⚖️ 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) False (b) True
4. 4.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to catch any spills (c) to cool the glass (d) to grow plants
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 same glass”? (a) we keep it the same (b) we change it (c) we measure it
6. 6.True or false: a fridge magnet works by magnetism. (a) True (b) False
7. 7.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) juice likes plastic (c) the straw is hot (d) the straw is magnetic
8. 8.⚖️ 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
9. 9.⚖️ 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) the same glass (d) how full the glass is
10. 10.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a bicycle pump (d) a fridge magnet
11. 11.🧺 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 sink or a bucket (d) a balloon
12. 12.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a medicine dropper (c) a fridge magnet (d) a compass needle
13. 13.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a drinking straw (c) a medicine dropper (d) a compass needle
14. 14.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) a balloon (c) a battery cell (d) a magnet
15. 15.⚖️ 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) False (b) True
16. 16.⚖️ 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 way we turn it (c) whether the card stays
17. 17.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
18. 18.⚖️ 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) True (b) False
19. 19.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) turmeric powder (c) a magnet (d) a towel
20. 20.🧺 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 stiff postcard (c) a glass of water (d) a battery cell
21. 21.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
22. 22.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
23. 23.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) the bottle is magnetic (c) air inside pushes back (d) water is hiding there
24. 24.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
25. 25.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
26. 26.⚖️ 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 measure it (b) we change it (c) we keep it the same
27. 27.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it will not break (c) it is hotter (d) it is heavier
28. 28.🥛 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
29. 29.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
30. 30.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
31. 31.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a glass of water (c) a stiff postcard (d) a towel
32. 32.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) friction (c) air pressure (d) sunlight
33. 33.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a medicine dropper (c) a drinking straw (d) a fridge magnet
34. 34.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
35. 35.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
36. 36.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a bicycle pump (d) a magnetic chess set
37. 37.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
38. 38.⚖️ 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 change it (b) we measure it (c) we keep it the same
39. 39.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
40. 40.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a compass needle (d) a drinking straw

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