Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 298 · 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: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
2. 2.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
3. 3.⚖️ 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) False (b) True
4. 4.🛟 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
5. 5.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
6. 6.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) glue on the card (c) a magnet (d) the cold water
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.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
9. 9.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
10. 10.⚖️ 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 keep it the same (c) we change it
11. 11.⚖️ 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 measure it (b) we change it (c) we keep it the same
12. 12.🥛 Which of these works by magnetism? (a) a suction hook (b) a fridge magnet (c) a bicycle pump (d) a vacuum cleaner
13. 13.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is magnetic (c) it is hotter (d) it will not break
14. 14.🧺 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 towel (d) a balloon
15. 15.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) water (d) air
16. 16.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a suction hook (c) a fridge magnet (d) a compass needle
17. 17.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card flies away (c) the card stays on (d) the water turns to ice
18. 18.True or false: a suction hook works by air pressure. (a) True (b) False
19. 19.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) False (b) True
20. 20.⚖️ 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 keep it the same (c) we change it
21. 21.⚖️ 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
22. 22.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
23. 23.⚖️ 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
24. 24.🔮 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
25. 25.🔍 Which is the odd one out? (a) a medicine dropper (b) a fridge magnet (c) a magnetic chess set (d) a magnetic pin holder
26. 26.True or false: a suction hook works by magnetism. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a drinking straw (c) a suction hook (d) a vacuum cleaner
28. 28.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) little air left inside (c) water is heavier (d) the card gets wet
29. 29.True or false: a bicycle pump works by air pressure. (a) False (b) True
30. 30.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
31. 31.🧺 Which of these is not needed for the card-on-a-glass trick? (a) yeast (b) a glass of water (c) a stiff postcard (d) a towel
32. 32.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
33. 33.🥛 Does a suction hook 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: whether the card stays is what we measure. (a) True (b) False
35. 35.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) turmeric powder (c) a glass of water (d) a stiff postcard
36. 36.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
37. 37.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) air inside pushes back (c) the bottle is magnetic (d) the cap is sticky
38. 38.🔍 Which is the odd one out? (a) a bicycle pump (b) a compass needle (c) a drinking straw (d) a vacuum cleaner
39. 39.⚖️ 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
40. 40.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) a balloon (c) turmeric powder (d) a magnet

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