Name:____________________ Section:________ Date:___________ Unit 2 Study Guide Draw the structure of the Earth and label these layers: Atmosphere Crust Lithosphere Asthenosphere Mantle Outer Core Inner Core Define the lithosphere _____________________________ Describe the shape of the Earth and draw a picture of it ______________________________ Where would you weigh more on the Poles or Equator? Poles List the layers of the Earth from least to most dense. What are the thickest and thinnest layers of the solid Earth? Define latitude and longitude Where is 0 degrees latitude and degrees Longitude? How do you find Polaris in the sky? How do you determine your latitude using Polaris? ______________________________ Thinnest________________ Thickest________________ Latitude: distance north and south of the equator Longitude: distance east and west of prime meridian 0 degrees latitude = equator 0 degrees longitude =prime meridian ______________________________ Your latitude equals Polaris’ altitude How do you determine your longitude using time? ______________________________ Where is the gradient formula found and what is it? ______________________________ What is a contour interval? ______________________________ Define isoline, contour line, isobar, and isotherm. ______________________________ ______________________________ ______________________________ ______________________________ What are the three types of scales? Graphic, verbal, and fractional Give an example of each. Graphic: Verbal: Fractional: