Roaring Forties

High school (ages 12+)
Geography

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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/roaring-forties

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. What is the location?Southern Hemisphere, between 40° and 50° south latitude
2. What is the dominant wind direction?Westerly
3. Why are the winds in the Roaring Forties so strong?Warm air from the equator moves toward the poles, and the Earth’s rotation pushes this air to the left in the Southern Hemisphere, creating powerful westerly winds. Because there are few big land masses to block them, the winds stay steady and strong.
4. How did sailors use the Roaring Forties?Sailors followed the Brouwer Route, using the consistent westerly winds to sail faster from Europe to the East Indies and Australasia, making long voyages quicker and safer.

Coriolis Effect: An apparent force caused by Earth's rotation that deflects moving objects and fluids.
Prevailing Westerlies: Winds that blow consistently from west to east, common in mid-latitudes.
Atmospheric Circulation: The large-scale movement of air in Earth's atmosphere, driven by solar heating and rotation.
Brouwer Route: A historical sailing route used in the 17th century to reach the East Indies from Europe.