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2011-10-12 14:50:34

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  1. Hydrology
    - Hydrology is the geoscience that describes and predicts the occurrence, circulation, and distribution of water of the earth and its atmosphere.
  2. - Hydrogen bonding-
    - Hydrogen bonding - the attraction of H to an electronegative atom, such as nitrogen, oxygen, or fluorine, between the positive charges of one molecule (H) and the negatively charged end of another (O)
  3. Specific heat
    -Specific heat is the amount of heat energy required to raise the temperature of 1 gram of water 1°C
  4. latent heat
    - latent heat is the energy absorbed or released during a change of state
  5. Temperature
    - Temperature is a measure of the vibratory energy of the molecules
  6. Viscosity
    - Viscosity is the resistance of a liquid to motion.
  7. A conservative quantity
    • - A conservative quantity is one that cannot be created or destroyed within the system. (don't gain or lose in
    • its just moves from one thing to the next)
  8. watershed
    - watershed is the area of land that drains water, sediment, and dissolved materials to a common outlet at some point along a stream channel.
  9. Time Series
    - Time Series is a discrete sequence of values with each value assigned to a particular time in the sequence
  10. The flow duration curve
    - The flow duration curve is a plot that shows the percentage of time that flow in a stream is likely to equal or exceed some specified value of interest.
  11. Radiation
    Radiation - process by which electromagnetic energy emits from an object; radiant energy flows out of all bodies, with temperature and nature of the surface of the objects playing a key role in radiation effectiveness.
  12. Convection
    Convection - the transfer of heat by a moving substance (opposite of conduction). --> convection oven
  13. Conduction
    Conduction - the movement of energy from one molecule to another without changes in the relative positions of the molecules.
  14. Convergent
    Convergent (extra-tropical and frontal) resulting from air being forced upward in a low pressure system (e.g. hurricane) or from the lifting of air masses along frontal boundaries; air pushed together has nowhere to go but up
  15. Convective
    Convective – resulting from convective lifting of an air mass. Convection is the circulatory motion that occurs in a fluid or gas at a non-uniform temperature owing to the variation of its density and the action of gravity
  16. Orographic
    Orographic – resulting from the lifting of air masses due to topography
  17. Magnitude
    1.Magnitude – amount of rain
  18. Intensity
    2.Intensity – rainfall per unit of time e.g inches per hour, inches per day, inches per year
  19. Duration
    3.Duration – how long the rainfall event of interest lasts or the period of rainfall we are interested in
  20. Frequency
    4.Frequency – how often an event occurs (e.g. a specific amount or amount per unit of time)
  21. Precip Order
    Drizzle Rain Ice Pellets (sleet) Freezing rain Snow Hail
  22. Drizzle
    Drizzle – fine mist with drop about 0.1 - 0.5 millimeters (0.004 – 0.02 in) low intensity
  23. Rain
    Rain – all liquid precipitation heavier than drizzle, average about 1 millimeter (0.04 in), intensities – light (<0.1in per hr), moderate (0.11 – 0.30 in per hr), heavy (> 0.30 in per hr)
  24. sleet
    Ice Pellets (sleet) – raindrops freeze as they fall when temperature is below freezing
  25. Freezing rain
    supercooled rain that is falling on a frozen surface
  26. Hail
    Hail – 0.2 to 4 in are rounded lumps of ice
  27. 3. Latent heat of vaporization and fusion
    The latent heat of vaporization is the energy required to overcome the molecular forces of attraction between the particles of a liquid, and bring them to the vapor state, where such attractions are minimal.