Structure of the earth. Wwk-`what is the earth made of and how does it effect it. The liquid magma inside the earth churns and creates earths magnetic field
The magnetic field • To understand how the magnetic field came to be, you must go to the center of the Earth where the magnetic field is produced. • At the heart of our planet lies the core, a solid ball of iron , capable of intense heat. Researchers call it "the inner core”. The inner core is 70% as wide as the moon. It spins at its own rate, as much as 0.2o of longitude per year faster than the Earth above it, and it has its own ocean: a very deep layer of liquid iron known as "the outer core." • Earth's magnetic field comes from this ocean of iron, which is an electrically conducting fluid in constant motion. Sitting atop the hot inner core, the liquid outer core seethes and roils like water in a pan on a hot stove. The outer core also has "hurricanes"--whirlpools powered by the Coriolis forces of Earth's rotation. These complex motions generate our planet's magnetism through a process called the dynamo effect.
Works cited • http://deep-high.blogspot.com/2011/09/ancient-ark-agendas-nibiru-matrix_29.html • http://www.nasa.gov/vision/earth/lookingatearth/29dec_magneticfield.html • http://www.silverblades-suitcase.com/artofadreamer/htm/space_planets.htm • http://www.learning-mind.com/2012-what-is-going-to-happen-to-the-earth-and-the-human-brain/ • http://www.nasa.gov/multimedia/imagegallery/image_feature_1529.html