49th parallel north

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/49th-parallel-north

1. Which continent is 49th parallel north in?
2. What is the geodetic reference?
3. What is the daylight extremes (solstices)?
4. Why does the 49th parallel north have longer days in summer and shorter days in winter?
5. Where does the 49th parallel north help make borders?

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. Which continent is 49th parallel north in?Crosses Europe, Asia, and North America
2. What is the geodetic reference?49 degrees north of the Earth's equator
3. What is the daylight extremes (solstices)?Approx. 16h 12m (summer) to 8h 14m (winter)
4. Why does the 49th parallel north have longer days in summer and shorter days in winter?During summer the sun stays higher in the sky, giving about 16 hours of daylight. In winter the sun stays lower, so there are only about 8 hours of daylight.
5. Where does the 49th parallel north help make borders?It forms most of the border between Canada and the United States, stretching about 2,030 kilometers from the Strait of Georgia to the Lake of the Woods.

Circle of Latitude: An imaginary line encircling the Earth parallel to the equator, used for geographic positioning.
Geodetic Reference: A standard point or line used in measuring and mapping the Earth's surface.
Anglo-American Convention of 1818: A treaty that established joint occupation of the Oregon Country and set the 49th parallel as a boundary.
Oregon Treaty of 1846: A treaty that extended the 49th parallel boundary westward to the Pacific Ocean.