solar system
TRANSCRIPT
THE SOLAR SYSTEM
THE SOLAR SYSTEMThe solar consists of the sun and all
the structures that travel around it.(1) The planets (2) planet-like objects called asteroids (3) chunks of iron and stone called meteorites, (4) comets
THE SUNo Center of the solar system.
o it’s diameter is 1,384, 000 km.
o PHOTOSPHERE-visible surface of the sun.
THE SUNo Compose of 81.76% hydrogen and 18.17% helium. The other elements total only 0.07%
o The temperature of the sun near its surface is estimated 10,000 ◦F.
o At it’s center the temperature maybe as high as 27,000,000 ◦F
THE PLANETS
THE PLANETSo Dark solid bodies , much smaller than the sun and stars.
oMERCURY, VENUS, MARS, JUPITER, SATURN, AND URANUS are planets that are bright enough to see from earth without telescope.
o The motion of planet as it orbits the sun is called REVOLUTION.
o Daily spinning of planet is called rotation.
o
THE PLANETSo Mercury, Venus, Mars are called terrestrial planets because they have similar densities and composition the same as Earth.o Jupiter, Saturn, Uranus, Neptune are called as giant planets. They are mostly composed of Hydrogen, Helium, and Methane. o An asteroid belt separates the terrestrial planets from the giant planets.o Arrangement of planets can be memorized as: My Very Eager Mother Just Served Us Nine Pizza
ASTEROID BELT
HOW THE PLANETS MOVEo There are three laws of planetary motion describing their orbits that were published by German astronomer Kepler.
o First Law states that the planets move in elliptical. As a result the planets are a little closer to the sun at some points in their orbit. PERIHELION- point of the orbit nearest to the sun. APHELION- point farthest from the sun
o Second Law is called law of areas. There is a imaginary line between the sun and the planet where at point when the planet is far from the sun it moves slower however if it is near the sun it moves faster.
HOW THE PLANETS MOVEo Third law states that a planet orbital period depends on its average distance from the sun. This explains that when the planet is four times as far from the sun it will take eight times to orbit the sun.
oPlanets rotates as it revolves around the sun. Jupiter takes 10 hours, Venus has 243 days, and earth is 24 hours or 1 day.
HOW THE PLANETS MOVE