Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 641 · 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 magnet is not needed for the card-on-a-glass trick. (a) False (b) True
2. 2.⚖️ 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 way we turn it (d) the same card
3. 3.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) air pushes it up (c) the straw is magnetic (d) the straw is hot
4. 4.🔍 Which is the odd one out? (a) a medicine dropper (b) a bicycle pump (c) a compass needle (d) a vacuum cleaner
5. 5.⚖️ 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 keep it the same (c) we measure it
6. 6.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a mirror (c) a towel (d) a stiff postcard
7. 7.⚖️ 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
8. 8.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a sink or a bucket (d) a battery cell
9. 9.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
10. 10.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a drinking straw (c) a suction hook (d) a magnetic chess set
11. 11.⚖️ 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
12. 12.🔍 Which is the odd one out? (a) a medicine dropper (b) a fridge magnet (c) a drinking straw (d) a vacuum cleaner
13. 13.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a suction hook (c) a magnetic chess set (d) a bicycle pump
14. 14.True or false: a medicine dropper works by air pressure. (a) False (b) True
15. 15.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
16. 16.🧺 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 stiff postcard (d) a sink or a bucket
17. 17.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) yeast (c) a glass of water (d) a towel
18. 18.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a sink or bucket (c) on a bed (d) over a laptop
19. 19.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
20. 20.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) True (b) False
21. 21.⚖️ 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 measure it (c) we keep it the same
22. 22.🥛 Which of these works by magnetism? (a) a suction hook (b) a magnetic pin holder (c) a bicycle pump (d) a medicine dropper
23. 23.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
24. 24.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a magnet (c) turmeric powder (d) a battery cell
25. 25.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) the card gets wet (c) little air left inside (d) water is heavier
26. 26.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
27. 27.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it is hotter (d) it will not break
28. 28.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) sunlight (c) friction (d) air pressure
29. 29.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a battery cell (b) a stiff postcard (c) a sink or a bucket (d) a towel
30. 30.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a drinking straw (c) a compass needle (d) a medicine dropper
31. 31.🔍 Which is the odd one out? (a) a magnetic chess set (b) a vacuum cleaner (c) a magnetic pin holder (d) a fridge magnet
32. 32.⚖️ 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
33. 33.⚖️ 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
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.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) air (c) smoke (d) water
36. 36.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
37. 37.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
38. 38.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
39. 39.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
40. 40.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to cool the glass (c) to grow plants (d) to catch any spills

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