atmosphere: the mixture of gases around the earth
noun the atmosphere is important for the earth
biosphere: a part of a planet's environment where life exists
noun we live in the biosphere
geosphere: the rigid outer layer of the earth, having an average thickness of about 75 km and comprising the earth's crust and the solid part of the mantle above the asthenosphere
noun the geosphere is an another name for lithosphere
climatology: the scientific study of climate
noun,the climatology predict the climate change
astronomy: the scientific study of the universe and of objects that exist naturally in space, such as the moon, the sun, planets, and stars
noun, the planet have many astronomy laboratories
hydrosphere: all of the water, ice, and water vapor at or near the surface of a planet
noun, the clouds are in the hydrosphere
oceanography: the scientific study of the sea
noun, the oceanography studies the ocean
meteorology: the scientific study of the processes that cause particular weather conditions
noun, the meteorology is a process that explain the weather conditions
hydrology: the study of water on the earth, for example, where it is and how it is used
noun, the hydrologist analyze the water
geology: the study of the rocks and similar substances that make up the earth's surface
noun, the geologist analyze the rocks
astro: relating to space, the planets, stars, or other objects in space, or to a structure in the shape of a star
noun-prefix, the astro is beautiful
vapor: gas or extremely small drops of liquid that result from the heating of a liquid or solid
noun-prefix, water when it boils converts in vapor
phisical geography: the study of the natural features of the earth, such as mountains and rivers
noun, the physical geography studies the mountains
paleontology: the scientific study of organisms that lived on earth before there were written records, esp. by examining fossils
noun, the paleontologist studies the bones of the dinosaurs
