Question

Identify the correct statements regarding Exosphere:

1. The exosphere is the outermost layer of the Earth's atmosphere
2. It has an extremely low density of particles.
3. The exosphere is composed mainly of hydrogen and helium, with traces of other lighter gases.

• A. i only
• B. All of these
• C. ii, iii
• D. iii only

Answer 1

Answer:

B. All of these

Exosphere

• The exosphere is the outermost layer of the Earth's atmosphere, merging with outer space.
• It has an extremely low density of particles, with gas molecules escaping into space without collisions due to the weak gravitational pull.
• The exosphere is composed mainly of hydrogen and helium, with traces of other lighter gases.
• It is the region where atmospheric gases transition into the vacuum of space, and its upper boundary is not precisely defined.
• Satellites in geosynchronous orbit and other human-made objects are found in the exosphere.
• The exosphere marks the outer limit of the Earth's atmosphere, blending into the interplanetary medium.