PLANET EARTHPLANET EARTH

INTRODUCTION

Definition: Geography is a social science. Geography is the study of the Earth surface( mountains, deserts, oceans, islands,…), inhabitans and the interaction of humans and their enviroment.

Video : introduction to earth science

The Universe is everything we can touch, feel, sense, measure or detect. It includes living things, planets, stars, galaxies ...The Earth Planet belongs to the Solar System which is located in the Milky Way Galaxy .

Universe definition:

It is located in the Solar System, which belongs to the Milky Way galaxy. Within the Milky Way there are more than 250 Solar Systems

In our Solar System there are eight planets and five dwarf planets. - They have different sizes and satellites revolving around. -All the planets of the Solar System revolve around the Sun.-The orbits on which they revolve are elliptical

The planets of the Solar System are:

Mercury Venus Earth Mars

Jupiter Saturn Uranus Neptune

0. THE UNIVERSE

The Earth is the only known inhabited planet

2.The Earth is not a perfect sphere because it is flat at poles

4. It is representd with an imaginary axis which goes from pole to pole

3. The surface area of our planet consist of

11. PLANET EARTH . PLANET EARTH

Characteristics of our planet

5. There is also an imaginary circle called Equator

70% water30% land

Northern Hemisphere

SouthernHemisphere

Blue planet

1. The Earth is the third planet from the Sun

Life can exist on the Earth thanks to: Life can exist on the Earth thanks to:

The Earth has two kinds of movements

•The earth rotates on its axis

It moves from west to east

•It takes 24 hours

•Consequence: Succession of days and nights

•Our planet moves around the sun (at 30 km/sec following its elliptical orbit)

•It takes 365 days and 6h.

•Every four years : leap year

•Consequences: a)The seasons b)Equinoxes and solstices c)Eclipses

2. MOVEMENTS OF THE EARTH

Video learn gradeEarth rotation video

Video why do we have seasons?

a) Seasons

b) Equinoxes and solstices

c) Eclipses

3. LINES AND GEOGRAPHIC COORDINATES

Imaginary lines

3. LINES AND GEOGRAPHIC COORDINATESLatitude and Longitude

4. TIMES ZONES

5. Maps

CARTOGRAPHY

REMOTE SENSING

AERIAL PHOTOGRAPHY SPACE IMAGES

uses

uses

Space images

5.3 Map scale

DEFINITION: Proportion between an area represented on a map and thereal size of the area.

NUMERICAL SCALE

NUMERICAL SCALE

LINEAR SCALE

LINEAR SCALE