Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 342 · 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 not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a mirror (d) a glass of water
2. 2.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
3. 3.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to make it rain (c) to cool the glass (d) to grow plants
4. 4.True or false: a bicycle pump works by air pressure. (a) True (b) False
5. 5.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
6. 6.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
7. 7.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we keep it the same (b) we measure it (c) we change it
8. 8.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) smoke (c) air (d) water
9. 9.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
10. 10.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
11. 11.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) on a bed (d) near a plug point
12. 12.🔍 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 stays on (c) the water turns to ice (d) the card flies away
13. 13.True or false: a suction hook works by air pressure. (a) True (b) False
14. 14.⚖️ 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 card (b) the way we turn it (c) whether the card stays (d) how full the glass is
15. 15.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is magnetic (c) the straw is hot (d) air pushes it up
16. 16.True or false: a bicycle pump works by magnetism. (a) False (b) True
17. 17.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) a mirror (d) a glass of water
18. 18.🥛 Which of these works by air pressure? (a) a suction hook (b) a compass needle (c) a magnetic pin holder (d) a fridge magnet
19. 19.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a balloon (c) yeast (d) a battery cell
20. 20.True or false: a drinking straw works by air pressure. (a) True (b) False
21. 21.🔍 Which is the odd one out? (a) a compass needle (b) a drinking straw (c) a magnetic chess set (d) a magnetic pin holder
22. 22.True or false: a compass needle works by magnetism. (a) False (b) True
23. 23.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) friction (c) magnetism (d) air pressure
24. 24.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is hotter (c) it is magnetic (d) it will not break
25. 25.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
26. 26.🥛 Which of these works by magnetism? (a) a drinking straw (b) a vacuum cleaner (c) a magnetic pin holder (d) a suction hook
27. 27.🔮 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
28. 28.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
29. 29.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) yeast (c) a towel (d) a sink or a bucket
30. 30.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
31. 31.🧺 Which of these is needed for the card-on-a-glass trick? (a) a sink or a bucket (b) turmeric powder (c) a magnet (d) a balloon
32. 32.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
33. 33.⚖️ 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) whether the card stays (b) how full the glass is (c) the same glass
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 way we turn it (b) how full the glass is (c) the same card (d) the same glass
35. 35.⚖️ 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
36. 36.⚖️ 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
37. 37.🧺 Which of these is not needed for the card-on-a-glass trick? (a) yeast (b) a glass of water (c) a towel (d) a sink or a bucket
38. 38.True or false: a compass needle works by air pressure. (a) False (b) True
39. 39.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
40. 40.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids