Chapter 1 Introduction to Earth Science Earth Science Chapter 1 Chapter 1 Introduction to Earth Science

What is Earth Science? The Branch of Science that encompasses all sciences that seek to understand Earth and Earth’s neighbors.

What is Earth Science? 4 Branches of Earth Science Geology Physical geology Geologic History Oceanography Meteorology Astronomy

4 Branches of Earth Science- GEOLOGY Geology is the study of Earth Divided into 2 smaller categories: Physical Geology : The study of the materials that make up Earth and possible explanations for the processes that shape the planet Historical Geology : The study of the long history of Earth.

Formation of the Earth Nebular Hypothesis C D E B Nebular Hypothesis There was a giant cloud of hydrogen and helium gas 5 billion years ago, the cloud contracted (got smaller) Formed a flat disk shape with the protosun (Pre-sun) in the center

Formation of the Earth Nebular Hypothesis C D E B Nebular Hypothesis Inner planets begin to form from metallic and rocky clumps. Larger outer planets began forming from fragments with a high percentage of ices

A C D E B

Formation of the Earth Earth’s Layers Temperatures of the inner earth increased, causing melting. This allowed the elements that were more dense to sink towards the center Lighter rocky components floated outward, toward the surface. Gaseous material escaped from Earth’s interior to produce the primitive atmosphere

Chapter 1 Section 2 A View of Earth