ERTH 2403 Lecture 5: Lecture 5
2 Sep 2016
School
Department
Course
Professor
Document Summary
Influence of density on ocean structure: water molecules and chemical bonds. Water is a molecule: a group of atoms held by chemical bonds. Chemical bonds: when electrons are shared or exchanged between atoms. Covalent bonds: bonds formed by shared pairs of electrons (co2, ch4: methane gas, and o2: atmospheric oxygen) Unequal shares of electrons creates polar bonds whereas equal bond creates non-polar bonds. The rate of vibration in calories: temperature. Is the response to an input of removal of heat a: measures the rate of vibration in degree celsius, heat capacity. Upon cooling water increases in density to 3. 980c and reaches maximum density = 1gm/cm3. From 3. 980c to 00c slight decrease in density. From point c to d: the density of water decreases abruptly and freezing removes heat from the water. Water change from liquid to solid state. Ice increases in density as it temperature is lower than 00c (d to e) Water molecule has 1050 between hydrogen atoms.
