Lecture 1 Flashcards
What did early life evolve within? and is it still with us?
Early life evolved within salt water, thus life today is basically diluted salt water.
What is the dilution level of Salt water within humans? (roughly)
it is 1/3 strength when compared to ocean salinity levels
What is Homeostasis?
the tendency toward a relatively stable equilibrium between interdependent elements, especially as maintained by physiological processes.
What is the cornerstone of life on this plant?
Water
What are some of waters Unique properties?
- frozen water is less dense then liquid water.
- Ties all life on earth together
- is a great heat sink
- It is viscous
- It is the universal solvent
What is wet deposition?
When water falls onto you.
What type of water storage is the ocean?
Long term water storage
What type of water storage is the atmosphere?
Short term.
What happens when you remove heat from water?
You increase its structural order and form ice.
It becomes less dense.
What happens when you add heat to water?
You decrease the structural order of the water and make water vapor.
it becomes far less dense
True or false:
At a large range of temperatures, water will have a surface tension with respect to above air.
True
What is a attrubte of surface tension that makes falling into water from high places lethal?
Water resists pressure,
The harder you hit it, the harder it hits back.
How does the J.C lizard run on water?
- It increases the surface by having large feet.
- makes rapid, hard strikes at the water (resits pressure)
- The H bonds in the water create surface tension for this to happen.
True or false:
Water has a low “latent heat of vaporization”
False:
it has a high latent heat of vaporization (enthalpy required to turn liquid to gas)
water and all its bonds are great heat sinks
Can you compress water into a smaller volume?
No, when this is done all you do is increase the pressure as density and volume cannot be altered. (kinda)
