Earth Science

• Earth Science


  is the name for all the sciences to collectively seek to understand Earth and its neighboring space
• Geology


  Study of the Earth
• Historical geology


  understand the origin of the earth and development through its 4.5 billion years
• Physical Geology


  understand the process that operates beneath and upon its surface
• Oceanography


  study the composition and movements of seawater, as well as coastal processes and marine life.
• Meteorology


  study of the atmosphere and the process that produce weather and climate
• Astronomy


  study of the universe
• Solar nebula

  our solar system is formed from a vast, rotating cloud of gas and dust
• Biosphere


  totality of life-forms
• Earth's subsystems

  1. Hydrosphere
  2. Atmoshpere
  3. Geosphere
  4. Biosphere
• Hydrosphere


  is a dynamic mass of water evaporating from the oceans to the atmosphere
• The global ocean accounts for 97% of Earth's water
• Atmosphere


  very thin, life-giving gaseous envelope
• Biosphere


  includes all life on Earth
• Geosphere


  extends from the surface to the center of the planet
• System


  a group of interacting, or independent, parts that from a complex whole
• Hypothesis


  a tentative explanation
• Theory


  ia a well-tested and widely accepted view that best explains certain scientific observation
• The universe began about 13.7 billion years ago
• Nebular theory

  bodies of our solar system evolved from a enormous rotating cloud called nebula
• Milky way belongs to a galaxy cluster called Local group
• Our solar system belongs to the milky way galaxy