Gravity and the Solar System

How Did It Form?

Alternative Assessment

By: Samantha Towle, Kaylee Sink, and Carly Philipps

Our local star, the Sun, and everything that circles around it is known as the Solar

System. The Sun’s gravity makes planets, asteroids, comets, and other bodies orbit

in oval paths called ellipses. These ellipses orbit around the sun.

The Solar System

I know what your probably thinking. How did the Solar System form???

Well here we go.

HOW DID THE SOLAR SYSTEM FORM?

It all started off by one thing the Solar Nebula. The Solar Nebula is a huge gas swirling cloud. The

clouds collapsed under its own gravity into a fast-spinning, ball-shaped mass. The center part became thicker and hotter and eventually became a shining bright star, the Sun. Rocks, dust, and gases circling in a disk around the Sun began lumping together,

and eventually it formed the planets.

The Planets & Ellipses

A planet is a world that orbits a star. There are eight planets circling around the Sun. There are Mercury, Venus, Earth, Mars,

Jupiter, Saturn, Uranus, and Neptune. They each take different amounts of time to orbit

the Sun. They orbit the sun in ellipses. Thanks to Kepler’s first law that stated “the

orbits of the planets are ellipses, with the Sun at one focus of the ellipse.”

Ellipse

Aphelion and Perihelion

The difference of Aphelion and Perihelion is that Aphelion is when a planet is away

from the Sun and that is when its Summer. When a planet is Perihelion its close to

the Sun and its Winter.

A good way to remember Aphelion is Aphelion Away.

GravityGravity is another topic I should talk about.

Gravity is a force of attraction between objects that is due to their masses and the

distance between them. Gravity is what keeps planets, asteroids, comets, and

other bodies in orbit around the sun. An example of gravity is what makes an apple

fall out of a tree.

The End!!!!!