|Skills used||Latitude & Longitude
Using scale to measure distance
Drawing logical conclusions
Tracing routes on a map
|Materials Needed||Globe in Horizon Ring Mounting|
Find a map in your textbook or another resource that shows the area included in the Louisiana Purchase. Now look at the same area on your globe. Make a list of some of the present day states that now occupy lands acquired in the Louisiana Purchase. (1.) ______________________ _______________________________________________________________________________ _______________________________________________________________________________
To explore the new Louisiana territory President Jefferson chose Meriwether Lewis and William Clark to lead an expedition west to the Pacific Ocean. To follow their expedition on your globe, start by placing a small "X" at the junction of the Mississippi and Missouri Rivers. The location is 39N/90W. From there, draw a line that follows the Missouri River to its beginning in western Montana (MT on your globe). From that location, extend your line west over land for about 250 miles until you come to the Snake River. Follow the Snake River until it joins the Columbia River and then follow the Columbia until you reach the Pacific Ocean near Portland, Oregon.
What was the land elevation around the river junction where Lewis and Clark began their journey on May 14, 1804? (2.) ___________________________________ What is the land elevation at the headwaters (the beginning) of the Missouri River? (3.) _______________________________ Remember, the explorers traveled by boat whenever possible. Why would the difference in land elevations at the beginning of the river and at end of the river make the outbound part of the expedition more difficult? (4.) ______________________________________________________ _________________________________
On October 20th the expedition reached the Mandan Indian villages at
a place in North Dakota near 47N/101W. (This would be at the bottom of
the "R" in the word America.) Place a small "X" at this point. What is
the straight-line distance from the starting point of the expedition to
What is the name given to the plains through which the explorers
passed in North Dakota, South Dakota, and eastern Montana? Study your
globe carefully for the answer. (7.) ______________ ________________ In
what part of the journey did the travelers encounter the highest land
On your globe, find the location where the Columbia River crosses the
120W longitude line. Notice how the river is squeezed between high
mountains on both sides. This area is a place where the river has cut a
narrow gorge through a range of mountains called the Cascades. Not only
is the river forced into a narrow passage here, but the elevation of the
riverbed drops abruptly. What kind of conditions might Lewis and Clark
have experienced while rafting through this section of the Columbia?
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