Planetary Atmospheres — MCQs

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1. What is the main component of Earth’s atmosphere?





2. Which terrestrial planet has the densest atmosphere?





3. What is the main gas in Venus’s atmosphere?





4. Which planet has almost no atmosphere?





5. Which greenhouse gas is most responsible for Venus’s high surface temperature?





6. The thin atmosphere of Mars is mostly composed of:





7. The ozone layer on Earth protects us from:





8. The strongest winds in the solar system occur on:





9. Which gas makes up most of Jupiter’s atmosphere?





10. Which gas is primarily responsible for the blue color of Neptune and Uranus?





11. What is atmospheric pressure at sea level on Earth?





12. Which planet has sulfuric acid clouds in its atmosphere?





13. What causes seasonal changes on Mars?





14. What is the primary driver of Earth’s atmospheric circulation?





15. Which planet has the most massive atmosphere?





16. The Great Red Spot on Jupiter is a:





17. Which planet’s atmosphere has the highest surface pressure?





18. Which gas dominates Saturn’s atmosphere?





19. Titan’s atmosphere is mostly composed of:





20. Which process is responsible for loss of atmosphere on small planets like Mercury?





21. Which gas is essential for respiration in most Earth life?





22. Which gas acts as a major greenhouse gas on Earth?





23. Which layer of Earth’s atmosphere contains weather phenomena?





24. Which planet has super-rotating winds that circle it faster than the planet’s rotation?





25. Which gas gives Uranus and Neptune their blue-green color?





26. The auroras on Jupiter are caused by:





27. Which giant planet radiates more heat than it receives from the Sun?





28. Which layer of Earth’s atmosphere contains the ozone layer?





29. Which Jovian planet has the most distinct banded cloud patterns?





30. Which gas dominates the atmosphere of Mars?





31. Why is Mercury’s atmosphere so thin?





32. Which atmospheric phenomenon causes Earth’s sky to appear blue?





33. Which of these planets has the thickest cloud cover?





34. Which planet has a methane cycle similar to Earth’s water cycle?





35. Which atmospheric layer of Earth contains meteors burning up?





36. What is the main cause of Jupiter’s colorful cloud bands?





37. Which gas is absent in Venus’s atmosphere compared to Earth?





38. Which layer of Earth’s atmosphere extends into space?





39. What drives the strong seasonal dust storms on Mars?





40. Which planet has the highest wind speeds in the solar system?





41. Which atmospheric gas acts as a shield from meteors on Earth?





42. Which planet has the most rapid rotation, affecting its atmospheric bands?





43. Which moon has a thick nitrogen-rich atmosphere, denser than Mars?





44. Which gas dominates Uranus’s atmosphere?





45. Which process removes carbon dioxide from Earth’s atmosphere naturally?





46. Which gas causes the greenhouse effect on both Earth and Mars?





47. Which planet has thick clouds that completely obscure its surface?





48. Which layer of Earth’s atmosphere reflects radio waves?





49. Which of the following is NOT a greenhouse gas?





50. Comparative study of planetary atmospheres helps us understand:





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