UNIVERSE
PLANETARY FORMATION
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
Irregular
|
|
A Sphere
|
|
An Oval
|
|
A disk
|
Detailed explanation-1: -Dwarf planets are a lot like regular planets: They both have enough mass and gravity to be nearly round-unlike odd-shaped asteroids. They both travel through space in a path around the Sun.
Detailed explanation-2: -The Sun and the planets formed together, 4.6 billion years ago, from a cloud of gas and dust called the solar nebula. A shock wave from a nearby supernova explosion probably initiated the collapse of the solar nebula. The Sun formed in the center, and the planets formed in a thin disk orbiting around it.
Detailed explanation-3: -Dwarf planets form in the same process that forms the rest of the solar system. The disk of matter in the proto-solar system condenses with the largest amount of matter forming the sun at the center of the solar system. The remaining matter coalesces into planets, dwarf planets, asteroids, and moons.
Detailed explanation-4: -Both planets and dwarf planets revolve around the Sun. Dwarf planets can be any shape except round. Dwarf planets do not clear the neighborhood around its orbit.