Warm Up 9/13

1
Warm Up 9/13

• What is the study of the atmosphere and the
  processes that produce weather and climate?
• Meteorology
• According to the nebular hypothesis, our solar
  system formed from a huge rotating cloud made
  mostly of ________.
• Hydrogen and Helium
• The area of Earth science that examines the
  physical and biological changes that have
  occurred in Earths past is called ____.
• Historical Geology

2
A View of Earth

• Chapter 1, Section 2

3
Earths Major Spheres

• Earth can be thought of as consisting of four
  major spheres the hydrosphere, atmosphere,
  geosphere, and biosphere
• Hydrosphere the water portion of Earth
• Atmosphere the gaseous portion of a planet the
  planets envelope of air
• Geosphere layer of Earth under both the
  atmosphere and the oceans
• Because the geosphere is not uniform, it is
  divided into three main parts based on
  differences in compositionthe core, the mantle,
  and the crust
• Biosphere all life on Earth the parts of the
  solid Earth, hydrosphere, and atmosphere in which
  living organisms can be found

4
Earths Layered Structure
5
Concept Check

• What are Earths four major spheres?
• The hydrosphere, atmosphere, geosphere, and
  biosphere

6
Plate Tectonics

• There are two types of forces affecting Earths
  surface
• Destructive forces such as weathering and erosion
  work to wear away high points and flatten out the
  surface
• Constructive forces such as mountain building and
  volcanism build up the surface by raising land
  and depositing new material in the form of lava
• The theory that finally emerged, called plate
  tectonics, provided geologists with a model to
  explain how earthquakes and volcanic eruptions
  occur and how continents move

7
Earths Major Plates
8
Concept Check

• What is the difference between destructive forces
  and constructive forces?
• Constructive forces build up the surface
  material, whereas destructive forces destroy
  surface material

9
Assignment

• Read Chapter 1, Section 1 (pg. 2-5)
• Do Section 1.1 Assessment 1-7 Connecting
  Concepts (pg. 5)
• Read Chapter 1, Section 2 (pg. 7-10)
• Do Section 1.2 Assessment 1-9 (pg. 10)