What major geographic feature in North America separates the rivers and streams that flow toward the Pacific Ocean from those that flow toward the Atlantic Ocean?

What major geographic feature in North America separates the rivers and streams that flow toward the Pacific Ocean from those that flow toward the Atlantic Ocean?

• A. Appalachian Mountains
• B. Continental Divide
• C. Great Plains
• D. San Andreas Fault

Answer: (B)

Rivers and streams are guided by high points in the land called a drainage divide. In North America, the major line that separates waters flowing toward the Pacific from those headed to the Atlantic is the Continental Divide. This elevated crest runs roughly along the Rocky Mountains, with extensions that shape how much water heads west to the Pacific (like the Columbia and Colorado rivers) and how much heads east toward the Mississippi-Missouri system and ultimately the Atlantic (via the Gulf of Mexico). The other options don’t define that continental boundary: the Appalachian Mountains influence eastern drainage but don’t separate Pacific and Atlantic basins across the continent; the Great Plains are flat and don’t form a single dividing line; the San Andreas Fault is a tectonic boundary with no direct role in determining river drainage to oceans.

Rivers and streams are guided by high points in the land called a drainage divide. In North America, the major line that separates waters flowing toward the Pacific from those headed to the Atlantic is the Continental Divide. This elevated crest runs roughly along the Rocky Mountains, with extensions that shape how much water heads west to the Pacific (like the Columbia and Colorado rivers) and how much heads east toward the Mississippi-Missouri system and ultimately the Atlantic (via the Gulf of Mexico). The other options don’t define that continental boundary: the Appalachian Mountains influence eastern drainage but don’t separate Pacific and Atlantic basins across the continent; the Great Plains are flat and don’t form a single dividing line; the San Andreas Fault is a tectonic boundary with no direct role in determining river drainage to oceans.