UNIT 1. PLANET EARTH

KEY WORDS

Planet: Celestial body without its own light, which revolves around a star such as the Sun.

 Map: Representation, usually on a plane surface, of part of Earth´s surface.

Time zones: Each of the 24 sections into which the Earth´s surface is divided to establish the time in different areas of the globe.

Hemisphere: Two halves of the Earth divided by the Equator.

 

Latitude: Is the distance between any point on the Earth´s surface and parallel 0º. It can be north or south, its maximun value is 90º.
Longitude: Is the distance between any point on the Earth´s surface and the 0º meridian. It can be east or west. Its maximum value is 180º.

ROTATION MOVEMENT

REVOLUTION MOVEMENT

Equinox: Times of year when day and night are the same lenght on the entire planet because the Sun is over the Equator.

Solstice: Time of year when the Sun is directly over one of the tropics, With the sun over the nearest tropic, the longest day and shortest night result on that hemisphere. Over the furthest tropic, the shortest day and longest night occur.

VOCABULARY

surface, axis, set, rise, rotation, revolution, leap year, globe, geographic coordinates, degree, official time, projection, scale.

MAPS OF SPAIN