Dinamika Lithosfer #1 Pengertian Lithosfer

Assalamualaikum warahmatullahi wabarakatuh Welcome to the Andi Guru Geography channel Lithosphere understanding Earth is one of the solar system member planets in the Milky Way galaxy or we often call it the Bima Sakti galaxy Earth is in the third place as the planet closest to the sun Earth has attributes that meet the requirements to support life such as water, air, and land Earth as the main study in geography has material objects or study objects called Geosphere Among others include lithosphere, which discusses the layers of rocks and what is below it Then hydrosphere, which discusses the layers of water Then atmosphere, which discusses the layers of air Biosphere, which discusses life in this case, flora and fauna And Anthroposphere, which discusses the life of humans and their impact on nature According to our research this time, we discuss lithosphere Where lithosphere understanding is based on the origin of the word Because lithosphere is made up of two words, which is lithos which means rock and sphere which means layer Lithosphere is a layer of rock that forms the surface of the earth which is also called the crust or the skin of the earth Lithosphere has different thicknesses Under the earth, the thickness of lithosphere can reach 20 to 70 km While under the sea, the thickness of lithosphere is thinner, up to 7 to 10 km Lithosphere or crust or skin of the earth has several components Where the crust of the earth or lithosphere is arranged by two layers of formation That is the silicon-aluminum layer or often abbreviated as the sial layer This layer is the layer at the top and forms the crust or continental crust The sial layer has a dominant arrangement of rocks, which is granite rocks, so it is granitic The sial layer has a mass of 2.7 g per cm3 That is the arrangement at the top While at the bottom, the arrangement of the crust of the earth is silicon and magnesium or often abbreviated as sima Sima is at the bottom and forms the oceanic crust The arrangement of silicon and magnesium rocks is basalt, so it is basaltic It has a mass of 3.0 g per cm3 The structure of the earth itself has several parts Starting from the lithosphere, which is the outer part of solid rocks Then below the lithosphere there are layers of the earth's arrangement, namely the asthenosphere or often abbreviated as the mantle layer And the layer of the barysphere or the earth's core, where the earth's core consists of the outer core and the inner core Asthenosphere and barysphere are not discussed in detail in geography, but are studied more deeply in the field of geology Asthenosphere and barysphere are often referred to as the mantle layer Asthenosphere has a thickness of 2,900 km with a mass of 5 g per cm3 The main arrangement of the asthenosphere is iron and magnesium, which are hot and liquid While in the barysphere or often referred to as the earth's core, it is a layer consisting of a liquid outer core and a dense inner core Its mass is 15 g per cm3 The main arrangement of the barysphere is iron and nickel That was a brief explanation of the lithosphere, its understanding, and the structure of the earth's layers Thank you for your attention Wassalamualaikum warahmatullahi wabarakatuh