click below
click below
Normal Size Small Size show me how
Dynamic Earth
Chapter 3 vocabulary
Term | Definition |
---|---|
Geosphere | solid part of Earth that consist of rock, as well as the soil and loose rocks on earths surface. |
crust | earths thin outer laer, composed of mainly light elements. |
mantle | the layer beneath the crust, makes up 64% of the earths mass |
Core | innermost outer layer, composed of the densest elements with a radius of approx. 3,400 km |
lithosphere | all of earths outer layers. |
asthenosphere | the layer beneath the lithosphere. plastic, solid layer f the mantle made of rock that flows ery slowly. |
tectonic plates | the outer most layer of earth divided into seperate pieces that move seperately. |
troposphere | extends to about 18 km above earths surface. almost all the weather occurs in this layer |
statosphere | extends from 18 km to about 50 km. temp rises as the hight increases because the ozone layer absorbs the heat. |
Ozone | O3. molecule made up of 3 oxygen atoms. |
Radiation | the transfer of energy acrosss space and in the atmosphere. |
Conduction | the transfer of heat from a warmer object to a colder through direct contact. |
convection | the transfer of heat through air currents |
Greenhouse effect | the process by which gases trap heat against the earths surface. |
water cycle | continuous movement of water into the air, onto land, and the back |
evaporation | process by which the water is heated and rises into the atmosphere as water vapor. |
condensation | water vapor condensing back to water onto dust or other particles. |
precipitation | larger droplets of water from clouds. rain hail sleet or snow. |
salinity | the concentration of all the dissolved salts it contains. |
fresh water | a little more than %3 of water on earth is in this form. most of it is in glaciers or icecaps. |
biosphere | the narrow layer of the atmosphere around earths surface in which life may exist. |