ocean water and climate change

Ocean water is more dense than fresh water. It has a density of 1.025 while fresh water is 1.0

Global warming at the poles and equator will lead to hasher weather increase in sea level increase in sea level and even mass extinctions.

Surface water

San Francisco and Norfolk, Virginia are on the same latitude but because San Francisco has air coming in from the ocean the temperatures in summer and winter are different.

Different ways temperatures are moderated on earth are
-Liquid water at the surface
-Distance from ocean
-Water Vapor
-Higher humidities = Moderate Temperatures

Thermal characteristics of water

• Heat and temperature aren't different; Heat is the energy and temperature is a measure of it.
• Heat capacity of water is high, it has to absorb 4,184 joules to increase 1 degree Celsius
• Heat capacity of water is unique because is is very high and takes a while to go up
• Water temperatures affect its density because colder water is more dense and in the ocean colder water has more salinity which also makes it more dense

Chemistry of water

QUESTIONS
1. Describe how water molecules are bonded.
2. Describe how the positive and negative changes at water are distributed.
3. Describe the chemistry of water that allows an insect to walk on water.
4. What is unique about water and its density.

ANSWERS
1. each hydrogen nucleus is bout to the central oxygen atom by a pair of electrons that shared between then, called covalent chemical bonds.
2. negative charge is concentrated at the oxygen end of the molecule to oxygens high nuclear charge w/ exerts strong attactions on the electrons.
3. the water strider goes across the water due to the surface tension of the water. It helps it to glide/walk across the water quickly.
4.When water is a solid its less dense. Also the strong hydrogen - bonding forces in the water make it unique.