Presentation on theme: "Earth and Space Science"— Presentation transcript:
1 Earth and Space Science the scientific study of geology, oceanography, meteorology, environmental science and astronomyView of Earth from the International Space Station.
2 Earth and Space Science Earth is generally thought of being made of four “spheres”:Geology - Lithospherethe hard outer crust (rocks) which covers 30% of our planettwo types:a. continental crust (rock type granite - old)b. oceanic crust (rock type basalt - young)Mountains in Northern Canada.
3 Earth and Space Science Oceanography - Hydrospherethe 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.
5 Earth and Space Science Meteorology - Atmospherethe 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.
7 Earth and Space Science Environmental Science - Biospherethe global community of living organisms and their environmentlife has been found ranging from 41 km above Earth’s surface to a depth of 5 km into Earth’s crustRainforest of South America.