Q. Which of the following differences between lunar regolith and terrestrial soil are correct?
Lunar regolith doesn’t contain organic matter while terrestrial soil does.
Lunar regolith doesn’t have water content while terrestrial soil does.
Lunar regolith contains glassy agglutinates while terrestrial soil doesn’t.
Choose the correct answer using the codes given below: Answer:
1, 2 & 3
Notes:
The lunar regolith is very different from terrestrial soils. It doesn't contain organic matter (worms, bacteria, decaying plant matter) that is characteristic of soil on Earth.
Neither does it have an inherent water content.
Metal and oxygen are common in lunar regolith.
“Glassy agglutinates" - small mineral fragments mixed with melted glass - are abundant in lunar regolith. They are formed by a process referred to as "lunar gardening". This is the way that the regolith changes, through bombardment of the Moon's surface by cosmic radiation, solar wind and minuscule meteorites, also known as space weathering. Because there is no atmosphere to slow down the tiny meteorites hitting the surface, they impact at high velocity, causing melting and then quenching (rapid cooling) at the impact site.