Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 261 · 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 works by magnetism? (a) a compass needle (b) a bicycle pump (c) a suction hook (d) a drinking straw
2. 2.🥛 Which of these works by air pressure? (a) a suction hook (b) a fridge magnet (c) a compass needle (d) a magnetic pin holder
3. 3.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to grow plants (c) to catch any spills (d) to make it rain
4. 4.True or false: a suction hook works by magnetism. (a) False (b) True
5. 5.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
6. 6.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) the card gets wet (c) it looks nicer (d) little air left inside
7. 7.⚖️ 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) False (b) True
8. 8.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) sand (d) air
9. 9.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
10. 10.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
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) True (b) False
12. 12.True or false: a drinking straw works by magnetism. (a) True (b) False
13. 13.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
14. 14.🥛 Which of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a magnetic chess set (d) a medicine dropper
15. 15.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a battery cell (c) a glass of water (d) a towel
16. 16.🔍 Which is the odd one out? (a) a suction hook (b) a fridge magnet (c) a vacuum cleaner (d) a drinking straw
17. 17.True or false: a compass needle works by magnetism. (a) False (b) True
18. 18.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) juice likes plastic (c) air pushes it up (d) the straw is hot
19. 19.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is magnetic (c) it is heavier (d) it will not break
20. 20.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
21. 21.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
22. 22.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
23. 23.True or false: a bicycle pump works by air pressure. (a) False (b) True
24. 24.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a stiff postcard (d) a mirror
25. 25.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
26. 26.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
27. 27.🧺 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 magnet
28. 28.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a vacuum cleaner (d) a magnetic chess set
29. 29.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a sink or a bucket (c) a glass of water (d) a towel
30. 30.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a drinking straw (c) a magnetic chess set (d) a bicycle pump
31. 31.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a drinking straw (d) a compass needle
32. 32.True or false: a drinking straw works by air pressure. (a) False (b) True
33. 33.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
34. 34.⚖️ 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 same card (b) the same glass (c) whether the card stays (d) how full the glass is
35. 35.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
36. 36.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the water turns to ice (c) the card stays on (d) the glass breaks
37. 37.True or false: a suction hook works by air pressure. (a) True (b) False
38. 38.⚖️ 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 same card (c) whether the card stays
39. 39.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
40. 40.True or false: a fridge magnet works by air pressure. (a) False (b) True

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