Earthquakes, Volcanoes, and Tsunamis: Projects and Principles for Beginning Geologists

Earthquakes, Volcanoes, and Tsunamis: Projects and Principles for Beginning Geologists — page 5
and consists of a skin a meaty part and a core or pit The core of the earth is solid metal iron and nick el surrounded by hot liquid metals The meat of the earth the mantle is a hot somewhat soupy mass of melted rock called magma The skin of the planet is its crust the hard surface of the earth on which we live Crust Mantle Liquid core Solid core 1 250 km 775 mi 2 200 km 2 900 km 1 364 mi 1798 mi The crust is not equally thick all around the earth It is as deep as 40 kilometers 25 miles under the surface of the continents and as thin as 5 kilometers 3 miles under the ocean