When this contracts, the temperature and rotation increase.
What is a nebula
100
The more of this there is in a planet or planetismal, the stronger the gravitational pull
What is mass
100
The greater the _____ the more oval like, or odd, the orbit becomes
What is eccentricity
100
This area is further AWAY from the sun
What is aphelion
100
A full trip along an orbit is a ________
What is revolution
200
The nebula _______ into a disk as rotatation continues
What is flattens?
200
This force reshapes protoplanets into spherical planets
What is gravity
200
This law states that planets orbit in elliptical paths
What is Kepler's First Law
200
This area is closer to the sun
What is perihelion
200
This law states the more mass an object has, the greater the gravitational pull. The closer the object is to the sun, the greater the gravitational pull.
What is the Universal Law of Gravitation
300
For this process to begin, the temperature must increase to reach the critical temperature
What is fusion
300
Gravity and the rotation of Jovian planets form disks around the planets and these form
What are moons
300
This says that any objects that have the same orbit areas will take the same amount of time to orbit the area
What is Kepler's Second Law
300
Because of Kepler's Second Law, the perihelion must move ____ than the aphelion
What is faster
300
The length of time (years) it takes for a planet to orbit the sun.
What is period
400
Heavier elements are ________ to the sun. Lighter elements are further from the sun
Where is closer
400
Craters, moons, and exceptions in the rotation period and the inclination of the axis formed from
What is bombardment
400
This law states that if you know the length of time an object takes to orbit the sun you know the distance the object is traveling.
What is Kepler's Third Law
400
The spinning of an object on its axis
What is rotation
400
Kepler's third law states that this squared is the area cubed
What is period
500
In this process dust and particles collide and stick together
What is accretion
500
This cleared the solar system of dust and gas. This means no more planets can form.
What are solar winds
500
For the orbit of planets to be elliptical, planets would have to orbit around this many foci.
What is two
500
The path a body follows as it travels around another body in space is its ____
What is orbit
500
This is hotter closer to the sun and cooler further from the sun