celestial body

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Project 4 Solar energy

por Mariam Kolaghassi

Tesla

por Miguel Mota

Renewable Sources of Energy

por Amelia Rejek

Origin of life on earth

por nourhan elkafas

celestial body

Main topic

comets

the size can come up to 150 000 000km

burns out after several thousand years

when a comet travels towards the sun the radiation makes the tail look like ts behind its self

tail looks like its going the other way when traviling away from the sun

doesnt produce own light

made of dust and ice

core is a rock

asteroids

asteroids are leftovers of the dust thing that collapsed under its own fat weight to form the solar system

travels around the sun at a average speed of 25km

size varies from one meter to 1000 meters wide

known as mini planets

meteors

meteors are actually shooting stars

500 meteorites reach the earths surface every year

only six go to scientists for their studies

meteors are called meteorites when they collide with the earths surface

found in the asteroids belt

size varies

is a floating piece of stone and metal

fragments of asteroids and comets

Subtopic