Plate tectonics is the theory that Earth’s outer shell is divided into several plates that glide over Earth's mantle.

All species on Earth, both living and extinct, are related. We know this because of a biological tool called the tree of life. This "tree" takes the form of a diagram that maps the relationships ...

There are many types of Earth science, including the study of Earth's inner layers.

Regents Review 2.0: Earth ScienceAS A RESULT, IGNEOUS ROCKS HAVE A RANGE OF OBSERVABLE TEXTURES SUCH AS GLASSY OR NON-CRYSTALLINE, AS SEEN IN THIS OBSIDIAN SAMPLE THAT COOLED VERY QUICKLY, COARSE ...

Not as simple as you might think Many people might be surprised to learn that Earth's orbit around the sun is much more complicated than the simple diagrams studied in childhood science classrooms.