ASL - Diversificación: EARTH

Landforms

Landforms Lesson & Images from Alan Baumer

Continental drift and plate tectonics

Video by makemegenious

Image by wikipedia.org

Image by http://denali.gsfc.nasa.gov/dtam/gtam/

Image by http://oceanexplorer.noaa.gov/

The structure of the Earth

Image by http://science6shms.pbworks.com/w/page/24840602/layers%20of%20the%20earth

Images by ">Appuseries

Latitude and Longitude

Latitude and longitude indicate geographical coordinates: the exact location of a place on the Earth.

Latitude is measured by using the parallels which start at the equator (0º). At the poles they are 90º. They are north (N) or South (S) depending on whether they are located in the northern or southern hemisphere. All locations on a line have the same latitude.

Longitude is measured by using the meridians which start at the prime meridian (0º). They run vertically from 0º to 180º to the West (W), and 0º to 180º to the east (E). All locations on a line have the same longitude.

The combination of latitude and longitude gives us the geographical coordinates of a place.

Meridians and parallels

Meridians and parallels are a series of imaginary vertical and horizontal lines enables us to identify the exact location of places on Earth.

- MERIDIANS

Meridians are semicircles which go from one pole to the other. The prime or Greenwich meridian (0º) is the point of reference for other meridians. Greenwich meridian divides the Earth into two hemispheres: the western and the eastern hemisphere.

Image by http://kids.britannica.com/

- PARALLELS

Parallels are circles which are perpendicular to the meridians. The Equator (0º) is the most important parallel because it divides the Earth into two hemispheres: the northern and the southern hemisphere.