TARBUCK Chapter 1 4 5 7

• Name for all the sciences that collectively seeks to understand Earth and its neighbors in space

  Earth Science
• Branches of Earth Science

  1.Geology

  2.Astronomy

  3. Oceanography

  4. Meteorology
• Overall Freshwater percentage


  2.56%
• Hydrosphere is a dynamic mass of water that is continually on the move, evaporating from the oceans to the atmosphere, precipitating to the land, and running back to the ocean again
• oceanography is the study of oceans
• Outer core radius


  2260 km
• inner core radius

  1216 km
• Plate tectonics is the theory that Earth's outer shell is divided into large slab of solid rocks called "plates" that glide over Earth's mantle
• Geologic time is the span of time since the formation of the Earth
• Age of himalayas

  
  

  50 my
• Continental crust density is 2.7 g/cm3
• Earth's mantle consists___of the planet's volume

  82%
• Sphere of Rock


  Earth's mantle
• Astenosphere is also known as

  weak layer
• Continental crust thickness


  35-70 kms thick
• Oceanic crust thickness


  7kms thick
• Silicates are the most abundant mineral group
• Transported sediments are soils developed on loose sediments
• H2CO3

  carbonic acid
• most abundant element in the earth's crust

  oxygen
• 2nd most abundant element in the earth's crust

  silicon