Southern Ocean

High school (ages 12+)
Geography

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/southern-ocean

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. How big is the Southern Ocean?21,960,000 km² (8,480,000 sq mi)
2. How deep is the Southern Ocean?Factorian Deep at 7,434 meters (24,390 ft)
3. What is the geographic definition?Generally south of 60° S latitude, encircling Antarctica
4. What is the oceanographic significance?Key component of global thermohaline circulation (overturning circulation)
5. Why is the Southern Ocean important for Earth's climate?It helps move heat, salt, and carbon around the planet through a special circulation called overturning. This keeps global temperatures balanced.
6. How is climate change affecting the Southern Ocean?Warming makes the water layers more separate, slowing the circulation and hurting tiny animals like krill that many sea creatures eat.

Therohaline Circulation: Global ocean currents driven by differences in temperature and salinity.
Ocean Stratification: The layering of ocean water based on density, often due to temperature differences.
Antarctic Convergence: The zone where northward-flowing Antarctic waters meet warmer subantarctic waters, creating a distinct ecological boundary.
Tipping Point: A critical threshold where a small change can lead to large, often irreversible, system-wide effects.