physical geography: geography that deals with the exterior physical features and changes of the earth

geo =earth: the fragmental material composing part of the surface of the globe

logy =theory: a plausible or scientifically acceptable general principle or body of principles offered to explain phenomena

meteorology: a science that deals with the atmosphere and its phenomena and especially with weather and weather forecasting

atmosphere: the whole mass of air surrounding the earth

paleontology: a science dealing with the life of past geologic periods as known from fossil remains

biosphere: the part of the world in which life can exist

astro =star: a natural luminous body visible in the sky especially at night

hydro =water: the liquid that descends from the clouds as rain, forms streams, lakes, and seas

atmos =vapor: : diffused matter (such as smoke or fog) suspended floating in the air and impairing its transparency

clima =region: an administrative area, division, or district

geology : a science that deals with the history of the earth and its life especially as recorded in rocks

Oceanography: a science that deals with the oceans and includes the delimitation of their extent and depth, the physics and chemistry of their waters, marine biology, and the exploitation of their resources