What is Earth Science?

1
What is Earth Science?

• Chapter 1, Section 1

2
Overview of Earth Science

• Earth science is the name for the group of
  sciences that deals with Earth and its neighbors
  in space
• Earth science includes many subdivisions of
  geology (both physical and historical) such as
  geochemistry, geophysics, geobiology and
  paleontology, as well as oceanography,
  meteorology, and astronomy
• Geology the science that examines Earth, its
  form and composition, and the changes it has
  undergone and is undergoing
• Oceanography the scientific study of the oceans
  and oceanic phenomenon
• Meteorology the scientific study of the
  atmosphere and atmospheric phenomenon the study
  of weather and climate
• Astronomy the scientific study of the universe
  it includes the observation and interpretation of
  celestial bodies and phenomenon

3
Concept Check

• What are the two main areas of geology?
• Physical Geology and Historical Geology

4
Formation of Earth

• Earth is one of eight planets and many dwarf
  planets that revolve around the sun
• The nebular hypothesis suggests that the bodies
  of our solar system evolved from an enormous
  rotating cloud called the solar nebula
• It was made up mostly of hydrogen and helium,
  with a small percentage of heavier elements
• The lighter elements were taken away by the
  heavier outer planets (Jupiter, Saturn, Uranus,
  and Neptune), leaving the heavier elements in the
  inner planets (Mercury, Venus, Earth, Mars)
• Shortly after Earth formed, heat caused the
  interior to partially melt, allowing the heavier
  elements to sink towards the middle, and the
  lighter elements to float towards the surface,
  creating layers

5
Concept Check

• Why does Earth have layers?
• Denser elements sank to Earths center and less
  dense elements floated to the surface

6
ASSIGNMENT

• Create a COMIC POSTER (15 pts)
• Use page 4 of Text
• 6 Frames.
• 6 captions.
• 6 COLOR drawings that illustrate each phase of
  Nebular Hypothesis
• DUE TURN-IN End of Period.
• 2.5 pts Captions
• 10 pts Illustrationsuse color!!!
• 2.5 pts Effort

7
Formation of the Solar System
8
Assignment

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