Master Geography with Fun Quizzes & Brain Teasers!
how do continental crust and oceanic crust differ? how do continental crust and oceanic crust differ? continental crust is thicker than oceanic crust; continental crust is less dense than oceanic crust, the oldest continental crust is younger than the oldest oceanic crust, and the continental crust is composed of a variety of rock types, whereas oceanic crust is composed of basalt and gabbro. continental crust is thicker than oceanic crust; continental crust is less dense than oceanic crust, the oldest continental crust is older than the oldest oceanic crust, and the continental crust is composed of basalt and gabbro, whereas oceanic crust is composed of a variety of rock types. continental crust is thinner than oceanic crust; continental crust is less dense than oceanic crust, the oldest continental crust is older than the oldest oceanic crust, and the continental crust is composed of a variety of rock types, whereas oceanic crust is composed of basalt and gabbro. continental crust is thicker than oceanic crust; continental crust is less dense than oceanic crust, the oldest continental crust is older than the oldest oceanic crust, and the continental crust is composed of a variety of rock types, whereas oceanic crust is composed of basalt and gabbro. continental crust is thicker than oceanic crust; continental crust is denser than oceanic crust, the oldest continental crust is older than the oldest oceanic crust, and the continental crust is composed of a variety of rock types, whereas oceanic crust is composed of basalt and gabbro.
How does triangulation detenmine the epicentre of an earthquake? Hint 1: To find the location of an earthquake's epicentre through triangulation, geophysicists need data from at least three recording stations. - The distance rom a recording centre to a foreshock the earthquake itself, and an aftershock are plotted against time on an y graph - The time that it takes a P wave, an S wave, and a surface wave to reach a recording station are added together, and the average of these three times is calculated. This is done at three different recording stations; the station that has the lowest average of arrival time is closest to the epicentre of the earthquake f, and an aftershock are averaged together.- The distance from a recording centre to a foreshock, the earthquake itself, and cle made with this radius is drawn around the record centre; the epicentre is located within this circle- On a map. a circle is drawn around each of three recording stetions, with the radius being the distance from the station to the epicentre of the earthquake. The epicentre is located where the three circles intersect. - On a map, three lines are drawn to connect three stations that recorded the earthquake. The epicentre is known to be somewhere within this triangle.
ACTIVITY 7.5A Public Land Survey System Figure 7.8 illustrates a hypothetical area that has been surveyed using the Public Land Survey system. Figure 7.8A is a township and range diagram, Figure 7.8B represents a congressional township within the township and range system, and Figure 7.8C shows three different sections of a congressional township. Use Figure 7.8 to complete the following questions. 1. Use the PLS system to label the townships along the western edge and ranges along the bottom of Part A 2. Use the PLS system to label each of the sections in the congressional township shown in Part B. 3. In the space provided below, use the PLS system to describe Plots Y and Z. Plot X has been completed as an example. Plot X: NW, Sw, Sec. 8, T3N, R4W Plot Y: 1. Sec. R Plot Z: 1 -1, Sec. T R ges, and Topographic Maps 119 hetical Public map, show- Jarious parcels N Principalmeridian Y Base line 6 miles N A. Township and Range 6 miles 1 mile 6 miles 1 mile Y 1 mile Y Z N N B. Congressional Township C. Sections