NATS 1880 Chapter Notes - Chapter 7: Polar Regions Of Earth, Surface Tension, Inverse-Square Law
Document Summary
Nats1880 chapter 7: searching for life in our solar system . Life on earth uses 25 of 92 elements of the periodic table. H, o, n, c made up 96% of the mass of living organisms. Energy source to allow metabolic functions supplied by the sun (photosynthesis) @ (# au) the sun is only 1 / (# au) square as bright as @ 1 au. Water is essential for the dissolving and transport of organic materials, metabolic processes. Advantage of water: chemical reactions processed faster at higher temperature, a wider liquid range of temperature, ice is less dense than liquid water, water is a polar molecule -> assists in dissolving materials & in chemical bonding. *polarity arises from the uneven charge distribution within the molecule: heat capacity: how much energy was to be stored per kilogram as it changes temperature, surface tension: property a surface has to resist an external force.
