science

• lithosphere is the solid part and the largest portion of the earth
• hydrosphere is the liquid part. it covers 71 percent of the earth's surface
• atmosphere is the gaseous portion that envelops the earth
• biosphere is the region where living things are found
• igneous rock is formed from hardened magma and lava
• sedimentary rocks are formed from deposited fragments or particles of other rocks that have been weathered and eroded
• metamorphic rocks are formed by changes in existing rocks due to heat, pressure, and chemical reactions
• examples of igneous rocks are rhyolite, granite, basalt
• examples of sedimentary rocks are limestone, conglomerate, dolomite, and shale
• examples of metamorphic rocks are marble (from limestone) and slate (from shale)
• rocks are made up of minerals which are either elements or compounds
• weathering is a term for all processes which combine to cause disintegration and chemical alteration of rocks at or near earth's surface
• erosion includes all the process of loosening, removal, and transportation which tend to wear away the earth's surface
• lithification is the conversation of unconsolidated sediment into solid rock
• meteorology is the study of earth's atmosphere, weather and climate
• weather is the daily condition of the earth's atmosphere
• climate is general conditions of temperature and precipitation in a lar area over a long period of time
• Nitrogen gas makes up 78% of the air we breathe.
• nitrogen is returned to the atmosphere by the process of decay