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 Vocabulary. Archipelago â a group of islands or a cluster of islands usually found in the open sea. They can be formed by erosion but most often occur as the result of volcanic activity. Fiji, Bora Bora, the Florida Keys, and even the entire nation of Japan are examples of archipelagos.