One of the topics under the GED Science Test is Earth Science. It covers the four spheres of planet earth. Learn more about earth here...
One of the topics under the GED Science Test is Earth Science. It covers the four spheres of planet earth.
The Earth, the planet we call home, how much do you know about it? Sure, you know that it looks like an imperfect circle, a little flat at the top and a little bulged on the sides. You know about the sea and the sky and about the land that you stand on. But there is more to our home planet than those things.  For example, have you ever wondered what is in the center of the earth or what it’s called? And most importantly, will you be able to answer if this topic appears in the GED test? All these questions will be answered once you understand the earth and its four spheres – lithosphere, hydrosphere, biosphere, and atmosphere.
