What is Earth Science?What is Earth Science?

Chapter 1, Section 1Chapter 1, Section 1

Overview of Earth ScienceOverview of Earth Science Earth scienceEarth science is the name for the group of is the name for the group of

sciences that deals with Earth and its neighbors in sciences that deals with Earth and its neighbors in spacespace

Earth science includes many subdivisions of Earth science includes many subdivisions of geology (both physical and historical) such as geology (both physical and historical) such as geochemistry, geophysics, geobiology and geochemistry, geophysics, geobiology and paleontology, as well as oceanography, paleontology, as well as oceanography, meteorology, and astronomymeteorology, and astronomy

GeologyGeology – the science that examines Earth, its – the science that examines Earth, its form and composition, and the changes it has form and composition, and the changes it has undergone and is undergoingundergone and is undergoing

OceanographyOceanography – the scientific study of the oceans – the scientific study of the oceans and oceanic phenomenonand oceanic phenomenon

MeteorologyMeteorology – the scientific study of the – the scientific study of the atmosphere and atmospheric phenomenon; the atmosphere and atmospheric phenomenon; the study of weather and climatestudy of weather and climate

AstronomyAstronomy – the scientific study of the universe; it – the scientific study of the universe; it includes the observation and interpretation of includes the observation and interpretation of celestial bodies and phenomenoncelestial bodies and phenomenon

Formation of EarthFormation of Earth Earth is one of eight planets and many dwarf Earth is one of eight planets and many dwarf

planets that revolve around the sunplanets that revolve around the sun The nebular hypothesis suggests that the The nebular hypothesis suggests that the

bodies of our solar system evolved from an bodies of our solar system evolved from an enormous rotating cloud called the solar enormous rotating cloud called the solar nebulanebula

It was made up mostly of hydrogen and It was made up mostly of hydrogen and helium, with a small percentage of heavier helium, with a small percentage of heavier elementselements

The lighter elements were taken away by the The lighter elements were taken away by the heavier outer planets (Jupiter, Saturn, Uranus, heavier outer planets (Jupiter, Saturn, Uranus, and Neptune), leaving the heavier elements and Neptune), leaving the heavier elements in the inner planets (Mercury, Venus, Earth, in the inner planets (Mercury, Venus, Earth, Mars)Mars)

Shortly after Earth formed, heat caused the Shortly after Earth formed, heat caused the interior to partially melt, allowing the heavier interior to partially melt, allowing the heavier elements to sink towards the middle, an the elements to sink towards the middle, an the lighter elements to float towards the surface, lighter elements to float towards the surface, creating layerscreating layers

FormatioFormation of the n of the

Solar Solar SystemSystem

AssignmentAssignment

Read Chapter 1, Section 1 (pg. 2-5)Read Chapter 1, Section 1 (pg. 2-5)Do Section 1.1 Assessment #1-7 (pg. Do Section 1.1 Assessment #1-7 (pg.

5)5)