Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 337 · 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 is needed for the card-on-a-glass trick? (a) a mirror (b) a glass of water (c) a battery cell (d) a balloon
2. 2.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is hot (c) the straw is magnetic (d) air pushes it up
3. 3.⚖️ 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) how full the glass is (b) whether the card stays (c) the way we turn it (d) the same glass
4. 4.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
5. 5.⚖️ 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 same glass (b) how full the glass is (c) whether the card stays (d) the same card
6. 6.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it is heavier (d) it will not break
7. 7.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
8. 8.⚖️ 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 measure it (b) we keep it the same (c) we change it
9. 9.True or false: a drinking straw works by air pressure. (a) True (b) False
10. 10.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to cool the glass (c) to make it rain (d) to catch any spills
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 sink or a bucket (c) a stiff postcard (d) a magnet
12. 12.⚖️ 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) True (b) False
13. 13.⚖️ 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 measure it (b) we change it (c) we keep it the same
14. 14.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
15. 15.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a suction hook (c) a fridge magnet (d) a medicine dropper
16. 16.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) over a sink or bucket (d) near a plug point
17. 17.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
18. 18.🧺 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 towel
19. 19.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a medicine dropper (c) a compass needle (d) a fridge magnet
20. 20.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a suction hook (c) a magnetic chess set (d) a drinking straw
21. 21.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a fridge magnet (d) a vacuum cleaner
23. 23.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) yeast (c) a sink or a bucket (d) turmeric powder
24. 24.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the glass breaks (c) the card stays on (d) the card flies away
25. 25.⚖️ 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) False (b) True
26. 26.⚖️ 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 kept the same. (a) True (b) False
27. 27.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) water is heavier (c) it looks nicer (d) the card gets wet
28. 28.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) smoke (c) sand (d) water
29. 29.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
30. 30.True or false: a suction hook works by magnetism. (a) False (b) True
31. 31.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
32. 32.🧺 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) a stiff postcard (d) a mirror
33. 33.🔍 Which is the odd one out? (a) a medicine dropper (b) a bicycle pump (c) a vacuum cleaner (d) a fridge magnet
34. 34.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the bottle is magnetic (c) the cap is sticky (d) water is hiding there
35. 35.🔍 Which is the odd one out? (a) a magnetic chess set (b) a suction hook (c) a medicine dropper (d) a bicycle pump
36. 36.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a balloon (c) a towel (d) a sink or a bucket
37. 37.⚖️ 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) False (b) True
38. 38.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
39. 39.True or false: a drinking straw works by magnetism. (a) True (b) False
40. 40.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed

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