1. How does temperature change throughout the ocean?
Ocean Temperature
How does temperature change throughout the ocean?

2. What we saw The green water (cold) sank to the bottom of the tank
The red water (hot) rose to the top of the tank
The blue ice floated at the surface of the water, the blue water from when it the ice melted sank to the bottom.
WHY???????

3. Temperature changes density
The density of a material is defined as its mass per unit volume.
Different materials usually have different densities
an important concept regarding buoyancy
So what is actually happening to the molecules?

4. Density predictions maldenmarinebio.wikispaces.com
Gas properties-temperatures affect.
Density sinking vs. floating
Phet.

5. How does density effect buoyancy?
Blue
Yellow
Green
Red
Same Mass
Same Volume
Same Density
In each scenario, rank the blocks from most dense to least dense.

6. How does density effect buoyancy?
Blue
Yellow
Green
Red
Same Mass
 second biggest
 biggest
 third
smallest
Same Volume
 6.00kg
8.00kg 
 4.00kg
2.00kg
Same Density
Second
3.00kg
biggest
4.00kg
Smallest
1.00kg
In each scenario, rank the blocks from most dense to least dense.

7. Complete the following statements in your notebook.
“When the temperature of molecules increase, the speed that the molecules move _________ therefore, it be comes ________ dense.”
“When the temperature of molecules decrease, the speed that the molecules move _________ therefore, it becomes __________ dense.”

9. What we saw The green water (cold) sank to the bottom of the tank
The red water (hot) rose to the top of the tank
The blue ice floated at the surface of the water, the blue water from when it the ice melted sank to the bottom.
WHY???????

10. Physical Oceanography
Temperature differences create
Thermoclines
A change in temperature more rapid than depth
An invisible blanket separating:
the upper mixed layer from the
calm deep water below.

13. So when does mixing occur?
Mixing churns up stable stratified water,
bringing cold water up and forcing warm water down.
But when and how?
In the winter months, the water column is fully mixed due to the prevalence of winter storms.

14. Once spring comes, the higher temperatures warm the surface waters
decreasing their density
stratified layers develop again.

15. Seasonal thermoclines
Can really mix things up…….

16. Thermocline summary Due to density changes
Winter months water mixes well
Spring warms surfaceless dense and floats
Thermocline begins
Summer – strong thermocline
Fall – decreased sun, lower temp, storms begin to mix
Winter - back to mixed