3.3-understanding constant pre urd cha exercise the map below depicts the conditions at 300 mb. 9300 9540 906 918 9660 9660 1. draw a solid line to show the axis of the large trough over the western united states. 2. draw a dashed line to show the axis of the large ridge over the eastern united states 3. draw the 100 knot isotachs (lines of constant wind speed). 4. draw a line along the axis of the 300 mb jetstream. 5. place an "h" in the two locations where the 300 mb surface is at its highest altitude. 6. place an "l- in the location where the 300 mb surface is at its lowest altitude. 7. based on this map, what can you say about the relationship between the direction and speed of the wind and the orientation and spacing of the height contours? severe & hazordous weather active learning exercises- ed 4