lab one

.pdf

School

University of California, Santa Cruz *

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Course

100

Subject

Geography

Date

Apr 3, 2024

Type

pdf

Pages

4

Uploaded by BarristerWombatMaster1020

OCEA-80A Lab Assignment 1: Intro to the ocean Week 2 40 Points Seawater density Objective : To observe the effects of water temperature and salinity on density. Background: The density of seawater varies from place to place in the ocean, depending on evaporation and rainfall rates, river runoff, and water temperature. The density of the water in which marine organisms live influences several aspects of their lives, such as the flotation of planktonic forms. In addition, sinking masses of higher-density seawater carry oxygen-rich waters from the surface to greater depths, as less-dense nutrient-rich water moves upward. Finally, sinking of high-density cold seawater in the north Atlantic and in the Antarctic drives the global circulation of water throughout the world's ocean basins—this is called thermohaline circulation . Online simulation: Follow this link to access the Density of Liquids simulation tool. The beakers in the left panel are filled with hot, cold, and room temperature freshwater. The purple beaker is filled with saltwater. The balloons in the right panel are filled with hot and cold freshwater, or room temperature saltwater. 1. The green beaker in the center of the screen is filled with room temperature freshwater. Click and drag the balloon filled with saltwater into the center of the freshwater beaker. What happens to the balloon and why? 5 points 2. Click on the blue “cold water” beaker, the blue beaker should replace the green room temperature beaker in the center of the screen. Next, click and drag the balloon filled with hot water and the balloon filled with cold water into the cold water beaker. Place the balloons in the middle of the beaker. What happens to the balloons and why? 5 points
3. Drag the balloons back to the right panel and click on the “hot water” beaker. The red beaker should replace the blue cold water beaker in the center of the screen. Next, click and drag the balloon filled with hot water and the balloon filled with cold water into the hot water beaker. Place the balloons in the middle of the beaker. What happens to the balloons and why? 5 points 4. Drag the balloons back to the right panel and click on the “salt water” beaker. The purple beaker should replace the red hot water beaker in the center of the screen. Next, click and drag the balloon filled with hot water and the balloon filled with cold water into the salt water beaker. Place the balloons in the middle of the beaker. What happens to the balloons and why? 5 points
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