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What happens to freshwater density when temperature descends from 4℃ to 1℃?Explain.

  • Draw two water molecules and label the Hydrogen and Oxygen atoms.
  • A bug can walk on water because of what property of water?
  • Which phase of water has the largest distance between water molecules: Gas, Liquid, or Solid?
  • Which phase of water has the smallest distance between water molecules: Gas, Liquid, or Solid?
  • What term is used to describe when water turns from liquid to gas?
  • What term is used to describe when water turns from gas to liquid?
  • What term is used to describe when water turns from liquid to solid?
  • What term is used to describe when water turns from solid to liquid?
  • At the beach, on a hot day, in which substance are molecules moving with the highest internal velocity: Sand, Water, or Asphalt?
  • What happens to freshwater density when temperature rises from 10℃ to 20℃?
  • What happens to freshwater density when temperature descends from 20℃ to 10℃?
  • What happens to freshwater density when temperature rises from 1to 4℃?
  • What happens to freshwater density when temperature descends from 4℃ to 1℃?
  • What happens to seawater density when temperature rises from 1℃ to 4℃?
  • What happens to seawater density when temperature descends from 4℃ to 1℃?
  • What is the freezing point of freshwater?
  • What is the boiling point of freshwater?
  • What happens to water’s freezing point when salinity increases?
  • What happens to water’s boiling point when salinity increases?
  • Why do some people add salt (increase the salinity) to the water before boiling pasta noodles?
  • What happens to the heat of the surroundings during evaporation?
  • What happens to the heat of the surroundings during precipitation?
  • What happens when the relative humidity of air equals 100%?
  • What happens when the relative humidity of air equals 90% and the air warms?
  • What happens when the relative humidity of air equals 90% and the air cools?
  • Based on the “Selective Color Absorption Underwater” figure, what color of light is absorbed first in the open ocean?
  • What color of light lasts the longest and thus gives this water its color?  Picture is attached
  • White light contains all colors of the spectrum (Red, Orange, Yellow, Green, Blue, Indigo, Violet). What color(s) does green pigment (chlorophyll) absorb?
  • What color does green pigment (chlorophyll) reflect?
  • Which of these water types has the deepest photic zone (light travels deepest)?
    • Hot water, Cold water, or No difference
    • Water with lots of sediment, Clear of sediment, or No difference
    • Water with lots of plankton, Desert water (no life), or No difference

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