Bellwork 2/8 In your own words, describe what ocean acidification is and what is causing this change Describe how humans are connected to this change in ocean water

Wednesday 2/8 Unit 1 Test Binder check About 50 points Multiple choice & short essays Binder check In-class activities

Ocean Acidification: Homework question #2 Specific heat of water Water temperature doesn’t change very quickly, so looking at seasons might not have been an effective approach. Let’s look at the global ocean

What conclusion can we draw regarding water temperature and change in pH?

Concept Mapping: create a concept map that includes all of the words in the table below The words must be connected with an arrow and linking words You may have more than one connection between words. Your goal is to make as many accurate connections as possible.

Unit 1 Review:

The 5 oceans on our planet are _________ Pacific Atlantic Indian Arctic Southern

Which hemisphere has more ocean area than land area? Southern Hemisphere

What tool/technique to scientists use to study the ocean floor? Sonar

A deep flat feature that makes up the “floor” of the ocean is called _____________. Abyssal Plain

The area of the ocean in which sunlight permeates is called the __________. Photic zone

As depth increases, what happens to temperature & salinity? Temperature decreases with depth Salinity increases with depth

(Expressed in parts per thousand) The term for the total amount of solid material dissolved in water is ______________. Salinity (Expressed in parts per thousand)

Two main sources of sea salts are __________. Weathering of rocks Volcanic eruptions

Two processes that decrease salinity (add water) are ________. Melting of sea ice/icebergs Runoff from land Precipitation

Two processes that increase salinity (remove water) are ________. Formation of sea ice Evaporation

What would a graph of temperature vs. depth at a low latitude look like?

Variations in ocean water temperature with depth

What would a graph of density vs. depth at a low latitude look like?

Variations in ocean water density with depth

This type of current develops from friction between the wind and the ocean water. Surface current

Circular moving current systems that dominate the ocean surface are called __________. Gyres

How do ocean currents play a role in weather and climate? Transfer heat from low latitudes to high latitudes (and vice versa)

Thermohaline currents Deep ocean currents that form from differences in salinity and temperature are called _________. Thermohaline currents

Sediment made up of shells and skeletons of once living organisms are called ___________ Biogenous Sediments

Lithogenous Sediments Sediment that is made from the weathering of continental rocks is called ________. Lithogenous Sediments

Change in sediment color Condition of shell/skeleton pieces How can sediments tell us about climate/environmental changes in the past? Change in sediment color Oxygen isotopes Condition of shell/skeleton pieces

What chemical is being absorbed by the ocean that is causing the water to decrease in pH? Carbon Dioxide

Which type of ocean water can hold more CO2, colder or warmer water? This means that the Arctic and Southern oceans tend accumulate CO2

Dissolves/Deteriorates What happens to Calcium Carbonate shells as a solution becomes more acidic? Dissolves/Deteriorates