Weathering Process. The weathering process occurs when rocks are exposed to the hydrosphere (water) and atmosphere (air).  These agents can change the physical and chemical characteristics of rocks.  As rocks are broken down (weathered), they can be classified as different types of sediments, which are: o boulders, cobbles, pebbles, sand, silt, clay, and colloids. See page 6 of the Earth Science Reference Tables explains the sizes of each of these sediments.
Lagoon is a water body that is formed near coastal areas. It is shallow and has a small link with sea or the ocean though it is also separated from the ocean water with reefs or a low sandbank. Arial view of a lagoon.
Landforms in the Ground. The definition of a landform can also be determined by where the area is formed in the earth. These tend to be within the ground. Valley-A valley is the opposite of a mountain.se this glossary of landform definitions as you study geographical and geological features. slide 1 of 4. This study guide to landforms shows you how many areas can come into play. Land is the solid part of the world, consisting of dirt, sand, soil, and rocks.