Crust - National Geographic Society
网页2024年4月25日 · Dynamic geologic forces created Earth’s crust, and the crust continues to be shaped by the planet’s movement and energy. Today, tectonic activity is responsible for the formation (and destruction) of crustal materials. Earth’s crust is divided into two types: oceanic crust and continental crust.
Earth's crust - Wikipedia
网页Earth's crust. Plates in the crust of Earth. Earth's crust is its thick outer shell of rock, referring to less than one percent of the planet's radius and volume. It is the top component of the lithosphere, a solidified division of Earth 's layers that includes the crust and the upper part of the mantle. [1]
30 Great Facts About The Earth’s Crust
网页2024年1月20日 · In this article, we'll delve into 30 fascinating facts about the Earth's crust, shedding light on its composition, structure, and the incredible processes that have shaped it over millions of years. From the composition of rocks to the forces that drive tectonic movements, we'll explore the mysteries and marvels of the Earth's crust.
The Earth's Crust: Everything You Need to Know - ThoughtCo
网页2019年1月25日 · The Earth's crust is an extremely thin layer of rock that makes up the outermost solid shell of our planet. In relative terms, it's thickness is like that of the skin of an apple. It amounts to less than half of 1 percent of the planet's total mass but plays a vital role in most of Earth's natural cycles.
Explainer: Earth — layer by layer - Science News Explores
网页2019年11月11日 · Earth’s crust is like the shell of a hard-boiled egg. It is extremely thin, cold and brittle compared to what lies below it. The crust is made of relatively light elements, especially silica, aluminum and oxygen.
Facts About Earth - NASA Science
网页The outermost layer, Earth's crust, goes about 19 miles (30 kilometers) deep on average on land. At the bottom of the ocean, the crust is thinner and extends about 3 miles (5 kilometers) from the seafloor to the top of the mantle.
Earth - Core, Crust, Mantle | Britannica
网页2 天之前 · Earth’s outermost, rigid, rocky layer is called the crust. It is composed of low-density, easily melted rocks; the continental crust is predominantly granitic rock ( see granite ), while composition of the oceanic crust corresponds mainly to that of …
The Earth's Crust - AMNH
网页The Earth’s crust is its lightest, most buoyant rock layer. Continental crust covers 41percent of the Earth’s surface, though a quarter of that area is under the oceans. The continental crust is 20 to 80 kilometers thick. Its rocks hold four billion years of …
Layers of the Earth - Science Notes and Projects
网页2023年8月1日 · The Earth, like an onion, consists of several concentric layers, each with its own unique set of properties and characteristics. The four primary layers are the crust, the mantle, the outer core, and the inner core. However, geologists subdivide these layers into a complex structure that better describes the Earth’s intricate composition and ...
Earth Structure - National Geographic Society
网页The structure of the earth is divided into four major components: the crust, the mantle, the outer core, and the inner core. Each layer has a unique chemical composition, physical state, and can impact life on Earth's surface.