THE EARTHTHE EARTH

Is the third planet from the sun, Is the third planet from the sun, and the fifth-largest of the eight and the fifth-largest of the eight planets in the Solar Sistem. It is planets in the Solar Sistem. It is also the largest, most massive, also the largest, most massive, and densest of the Solar System's and densest of the Solar System's planets. planets.

THE EARLY EARTHTHE EARLY EARTH

The Earth The Earth contains a lot of contains a lot of stars, planets stars, planets and moonsand moons . It . It was created was created about 4600 about 4600 years ago. years ago.

BIRTH OF THE EARTHBIRTH OF THE EARTHThe Earth started as The Earth started as

dust and gases, then it dust and gases, then it became solid, and became solid, and minerals were minerals were collected in the centre.collected in the centre.

At the same time, At the same time, oceans were formed oceans were formed because volcanoes and because volcanoes and ice were joined. ice were joined.

EARLY LIFEEARLY LIFE

At first, simple life forms from the oceansAt first, simple life forms from the oceans

then they developed and became green then they developed and became green plants.plants.

These plants released oxygen which These plants released oxygen which prevents most of the suns ultraviolet prevents most of the suns ultraviolet raysrays..

ANCIENT HISTORYANCIENT HISTORY

The Earth is always changing. AN accion The Earth is always changing. AN accion THAT CAN HAPPEN IN THE THAT CAN HAPPEN IN THE EARTH………. Earths changes was an EARTH………. Earths changes was an asteroid impact.asteroid impact.

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Changing climateChanging climateThe Earths temperature is changing The Earths temperature is changing

all the time. There are hotter and all the time. There are hotter and warmerwarmer times times

Ice ages

That happened because the Earths orbit changes

its shape

The past of our planetThe past of our planetVIDEOVIDEOScientists study the Earth’s Scientists study the Earth’s

past with the rocks that past with the rocks that formed in layers.formed in layers.

250 million years ago, 250 million years ago, today we know all the today we know all the continents were together. continents were together. That landmass was called That landmass was called PANGEA.PANGEA.