Earth and Space Science the scientific study of geology, oceanography, meteorology, environmental science and astronomy View of Earth from the International Space Station.
Earth and Space Science Earth is generally thought of being made of four “spheres”: Geology - Lithosphere the hard outer crust (rocks) which covers 30% of our planet two types: a. continental crust (rock type granite - old) b. oceanic crust (rock type basalt - young) Mountains in Northern Canada.
Earth and Space Science Oceanography - Hydrosphere the combined volumes of water on Earth (i.e. Oceans, lakes, rivers, glaciers, groundwater) 70% of Earth’s surface is covered by water (of which 97% is salt and only 3% freshwater) Iceberg off the coast of Antarctica.
Earth and Space Science Meteorology - Atmosphere the layer of gasses which surround Earth (i.e. air) 99% of air is made up of only two elements (79% nitrogen and 20% oxygen) other gasses include argon 0.9% and carbon dioxide 0.03% Weather is the atmospheric conditions in a particular location over a short period of time. Climate is the average weather conditions in a region over a long period of time. View over Arizona desert at sunset.
The Atmosphere
Earth and Space Science Environmental Science - Biosphere the global community of living organisms and their environment life has been found ranging from 41 km above Earth’s surface to a depth of 5 km into Earth’s crust Rainforest of South America.