© Oxford University Press España S.A., 2012

Planet EarthPlanet Earth

What do we know?

Planet Earth

What shape is the Earth?

Which parts of the Earth are flat?

Rotation

How long does it take the Earth to make a complete rotation?

What is the main consequence of rotation? Why does this happen?

Revolution

How long does it take the Earth to complete one revolution?

What is the main consequence of revolution?

Parallels

What are parallels?

Which parallel does 23º 27’ S correspond to?

Meridians

What are meridians?

Which number corresponds to the Greenwich meridian?

Latitude

What is latitude?

What units to do we use to measure latitude?

Longitude

What is longitude?

What is its maximum value?

Time zones

What happens when you cross the international dateline?

If it is 12 pm in Greenwich, what time is it in Sydney, Australia?

Cartographic projections

What type of projection is each image?

What is each type of projection usually used to represent?

Map scale

What is map scale?

What is the scale of this map?

What have we learned?

Planet EarthPlanet Earth

It is the third planet in the solar system

Its surface is made up of land and water

The Equator divides the planet into the Northern hemisphere and the Southern hemisphere

Life exists on the Earth because of the temperature, water and the atmosphere

The Earth’s lines and

geographical coordinates

On the Earth’s surface there are imaginary linesOn the Earth’s surface

there are imaginary lines

The geographic coordinates areThe geographic coordinates are

Parallels

Meridians

Latitude

Longitude

Movements of the Earth

It makes two movementsIt makes two movements

Revolution: on itself, has a duration of 24 hours and produces the succession of days and nights

Rotation: around the Sun, has a duration of 365 days and 6 hours, and produces the succession of the seasons

What have we learned?

Representationof the Earth

Representationof the Earth

Maps are representations of the Earth’s surface on a plane

The projections can be cylindrical, planar or conical

The scale of maps can be numerical and graphic

Time zones Sections dividing the globe in order to establish official time