Earth Science: Earth – Water – Oceanic Crust Oceanic crust covers two-thirds of the Earth’s surface. Crustal rocks are relatively recent, with none older than 200 million years, and they are constantly in motion. This movement expands the oceans and shifts entire continents. The oceanic crust begins beyond the flooded part of the continental shelf. … Read more
Earth Science: The Core and Mantle Of The Earth The interior of the Earth long presented an enormous puzzle to science. Seismic measurements helped to start unraveling the mystery and assisted the exploration of the structure and contours of the Earth’s interior. The interior of the Earth is separated into three chemically distinct parts: the … Read more
Discovery Science: Origins and Geology – Structure As insignificant as the Earth may be within the totality of the universe, it does hold a special position in our solar system, giving us our daily, yearly, and seasonal patterns Its internal structure plays an important role in both the processes that affect its surface and its … Read more
