Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Ch. 1.2- Earth*s Spheres
Transcript
Ch. 1.2- Earth Systems Target #10- I can identify how an earth system is described A system is an organized group of related objects or components that interact to create a whole The operation of an Earth system is a result of interaction between the two most basic components of the universe Matter & energy Matter & energy can be transferred A system is described by the way energy is transferred within one system or between systems Transfers are commonly accompanied by changes in the physical or chemical properties of matter Target #10- cont. Target #11- I can contrast an open and closed system Open System Both matter and energy are exchanged with the surroundings Examples Closed Water enters the lake through rain and streams Water exits through evaporation Sunlight and air exchange heat Energy, but not matter, is exchanged with the surroundings Example Closed Lake System Jar Light and heat can be exchanged through the jars sides Matter can not exit or enter the system Earth is mostly a closed system Target #12- I can list the 4 major spheres of Earth The physical environment of Earth is traditionally broken into four major spheres Hydrosphere Atmosphere Geosphere Biosphere Our environment is characterized by the continuous interactions of these spheres Target #13- I can describe the 4 spheres of Earth Hydrosphere Includes all of the water found on Earth Surface & groundwater 97% is salt water 3% is fresh water Only 1% of all fresh water is available for drinking Streams, glaciers, and groundwater are responsible for supporting life and creating many of Earth’s physical features Atmosphere A thin gaseous “envelop” surrounding Earth If Earth were an apple, the atmosphere would be the skin Most air is close to the surface Extends up to 800 miles The last 400 miles interact with space Function Provides the air we breathe 78% nitrogen 21% oxygen 1%- argon, water vapor, methane, carbon dioxide Exchanges energy between the surface and space Target #13- cont. Target #13- cont. Geosphere Includes all of the land found above and below the ocean Not a uniform structure Divided by composition Crust, Layers Mantle, Core are fluid, or move freely. Biosphere Made up of all life forms Zone of life extends from the ocean floor upward Can go as high as several thousand feet above sea level Organisms help maintain and alter their physical environment Target #13- cont. Identifying Relationships For each of Earth’s four spheres, describe one way that the water cycle affects the sphere.
