The document summarizes key characteristics and properties of water molecules and seawater. It discusses how water can change states between solid, liquid and gas. It describes how density, pressure, temperature and salinity affect water properties. It also covers how light, sound and ions behave in seawater, and how salinity is measured. Desalination processes are mentioned along with common gases in the atmosphere and oceans.

1. Chapter 5 and 6

2. What defines a water molecule?

12. How is light transmitted through water? What did people do when they had to spear fish? How did they compensate for the bending of light? What do we use to see salmon better when they are migrating in the fall?

14. How fast can sound transmit in the oceans? 5000 ft per second in oceans Compared to 1100 ft per second on land Sound increases with increase in temperature, pressure and salt

19. Questions about affects of sound source on marine mammals studied

41. What does this have to do with climate change? Higher CO2 concentrations the more acidic and lower Ph