The exosphere is the atmospheric layer farthest from the Earth’s surface. It represents the outermost edge of our atmosphere, where the air is so thin that gas molecules can travel hundreds of kilometers without colliding. In this region, the Earth’s gravity is very weak, allowing some light atoms to gradually leak away into the vacuum of outer space. ANSWER: (A) Exosphere
Share
As the final frontier of our gaseous envelope, the exosphere begins at about seven hundred kilometers and extends thousands of kilometers into space. It is characterized by extremely low density; in fact, it is essentially a vacuum. This layer is where most satellites orbit the Earth. Because the atmosphere here is so sparse, there is no distinct “end” to the exosphere; instead, it gradually thins out until it merges with the solar wind. Studying this layer is vital for understanding how Earth’s atmosphere interacts with solar radiation and how the planet loses its gases over time.
Get the best SSC CGL, CHSL, MTS, GD Mock Test experience on Competitive Exam Preparation TA Exam. Track your progress and win.
Download the app now!
Android: https://play.google.com/store/apps/details?id=com.ta.exam
iOS: https://apps.apple.com/app/id6759824444