Exploring Stream Flow Concepts

The video tutorial explains how to determine the direction of stream flow using a topographic map. It highlights two main methods: observing elevation changes and analyzing the V-shapes formed by contour lines. Streams flow from high to low elevations due to gravity, and the V-shapes in contour lines point upstream, indicating the opposite direction of flow. The tutorial provides a clear understanding of these concepts with examples.

What is the primary factor that determines the direction of stream flow?

• Magnetic field

• Wind direction

• High to low elevation

• Sun position

What are the bold and labeled contour lines on a topographic map called?

• Elevation markers

• Gradient lines

• Stream lines

• Index contours

What is the elevation near point X on the map?

• At least 180 units

• Below 50 units

• 100 units

• 50 units

What is the elevation near point Y on the map?

• Close to 200 units

• Close to 180 units

• Close to 100 units

• Close to 50 units

In which direction does the stream flow if point X is at a higher elevation than point Y?

• From point Y to point X

• In a circular motion

• It remains stationary

• From point X to point Y

Tags

NGSS.MS-ESS2-4

What shape do contour lines form as they cross a stream?

• Straight lines

• Circular shapes

• V-shapes

• U-shapes

What does the V-shape of contour lines indicate about stream flow direction?

• The stream flows parallel to the V

• The stream flows into the V

• The stream flows out of the V

• The stream flows in a circular motion

What is another method to determine stream flow direction besides looking at elevation?

• Checking the wind direction

• Measuring the temperature

• Observing the V-shapes of contour lines

• Using a compass

What does 'upstream' mean in the context of stream flow?

• The direction of the sun

• The direction of the wind

• The opposite direction of stream flow

• The direction the stream is flowing

What are the two main methods to determine the direction of stream flow?

• Checking magnetic field and using a GPS

• Looking at elevation and V-shapes of contour lines

• Using a compass and measuring temperature

• Observing wind direction and sun position