socialstudiesandenglish4: UNIT 1. EARTH AND SPACE

THE MOON IS A NATURAL SATELLITE OF THE EARTH.

IT TAKES 28 DAYS TO COMPLETE ITS ORBIT AROUND THE EARTH.

THE MOON'S APPEARANCE CHANGES AS IT ORBITS THE EARTH.

PHASES OF THE MOON:

NEW MOON

FIRST QARTER MOON

FULL MOON

LAST QUARTER MOON

THE EARTH'S MOVEMENTS:

THE EARTH MOVES IN TWO DIFFERENT WAYS: AROUND THE SUN (REVOLUTION MOVEMENT)

AND ON ITS OWN AXIS (ROTATION MOVEMENT)

EARTH'S REVOLUTION MOVEMENT:

THE EARTH TAKES 1 YEAR (365 DAYS) TO ORBIT THE SUN.

AS IT ORBITS, THE INCLINATION OF THE EARTH CHANGES IN RELATION TO THE SUN, THIS CAUSES THE FOUR SEASONS.

EARTH'S ROTATION MOVEMENT

THE EARTH TAKES 1 DAY (24 HOURS) TO ROTATE ON ITS OWN AXIS.

THIS MOVEMENT CAUSES DAY AND NIGHT.

IT IS DAY WHEN OUR PART OF THE EARTH IS ILLUMINATED BY THE SUN.

IT IS NIGHT WHEN OUR PART OF THE EARTH IS NOT ILLUMINATED BY THE SUN.

PLAY WITH THE SUN,THE EARTH AND THE MOON

http://htwins.net/scale2/index.html

http://www.ign.es/ign/flash/mi_amiga_la_tierra/homeTierra.html

A continuación el enlace a un interesante corto sobre la contaminación lumínica en las ciudades, que no nos permite disfrutar de las estrellas...

https://www.youtube.com/watch?v=ooVJtvrnZYk

WE REPRESENT THE EARTH WITH GLOBES AND MAPS

GLOBES ARE ROUND (3D)

MAPS ARE FLAT (2D)

TYPES OF MAPS:
PHYSICAL MAPS SHOW THE MAIN FEATURES OF A LANDSCAPE SUCH AS DESERTS, MOUNTAINS, RIVERS AND LAKES.

POLITICAL MAPS SHOW MAN-MADE FEATURES SUCH AS CITIES, ROADS AND BORDERS.

AN ATLAS IS A BOOK THAT CONTAINS:

- MAPS OF EVERY COUNTRY AND CONTINENT IN THE WORLD.

- THEMATIC MAPS WITH INFORMATION ABOUT POPULATION, CLIMATE, AND PHYSICAL AND POLITICAL FEATURES.

KEY: SYMBOLS AND COLOURS TO REPRESENT LANDSCAPE (ON PHYSICAL MAPS) AND CITIES AND BOUNDARIES (ON POLITICAL MAPS).

HEMISPHERES, LATITUDE AND LONGITUDE (PARALLELS AND MERIDIANS)

PARALLELS OR LINES OF LATITUDE ARE HORIZONTAL LINES.

PARALLELS SHOW THE DISTANCE OF A PLACE FROM THE EQUATOR, THAT IS LATITUDE. IT IS MEASURED IN DEGREES. THE EQUATOR IS 0º LATITUDE AND DIVIDES THE EARTH IN TWO PARTS: THE NORTHERN HEMISPHERE AND THE SOUTHERN HEMISPHERE.

MERIDIANS OR LINES OF LONGITUDE ARE VERTICAL LINES.

MERIDIANS SHOW THE DISTANCE OF A PLACE FROM THE GREENWICH MERIDIAN (0º), THAT IS LONGITUDE. IT IS ALSO MEASURED IN DEGREES. THE GREENWICH MERIDIAN PASS THROUGH LONDON AND SETS THE WORLD'S CLOCKS (GMT- GREENWICH MEAN TIME).