How were the planets in the solar system formed?(1 point)
Responses
The remaining materials from the sun's formation clumped together due to gravity.
The remaining materials from the sun's formation clumped together due to gravity.
The solid materials were forced out of the sun's disc and cooled down.
The solid materials were forced out of the sun's disc and cooled down.
The gas particles released by the sun were pulled away and became solid.
The gas particles released by the sun were pulled away and became solid.
The dust particles were attracted by gravity from distant galaxies.
The dust particles were attracted by gravity from distant galaxies.
The remaining materials from the sun's formation clumped together due to gravity.
The formation of planets in the solar system occurred through a process known as accretion. Here are the steps involved:
1. The solar system began forming from a cloud of gas and dust known as the solar nebula.
2. Gravitational forces within the nebula caused it to collapse, resulting in the formation of a rotating disc-shaped structure called the protoplanetary disk around the young sun.
3. Particles within the protoplanetary disk, ranging from dust grains to larger objects, began to collide and stick together due to their gravitational attraction.
4. These collisions and mergers led to the gradual growth of these objects, known as planetesimals.
5. Over time, planetesimals grew larger as they continued to collide and accrete more material.
6. The gravitational attraction of planetesimals led to the formation of protoplanets - larger, more solid bodies that continued to accrete material from the surrounding disk.
7. Eventually, the protoplanets became large enough to clear their orbits and became the planets we know today.
8. Additionally, as the protoplanets accreted more and more material, they also began to accumulate gas from the disk to form gaseous envelopes around them, particularly in the outer regions of the solar system.
9. The processes described above led to the formation of the planets in the solar system, each with its unique composition, size, and orbital characteristics.
10. The remaining materials in the protoplanetary disk that did not accrete onto planets or other celestial bodies formed smaller objects such as asteroids and comets.
The correct answer is:
The remaining materials from the sun's formation clumped together due to gravity.
To understand how the planets in the solar system were formed, we need to go back approximately 4.6 billion years ago. At this time, there was a giant cloud of gas and dust known as a nebula. Within this nebula, gravitational forces started to attract particles towards each other, causing them to clump together.
As these clumps of material continued to grow, they collided and merged, forming larger and larger objects. Eventually, this process led to the formation of protoplanetary disks, which are flat structures made up of gas and dust rotating around a central star.
Over time, the particles within these disks started to stick together due to electrostatic forces and other processes. This resulted in the formation of planetesimals, which are small rocky or icy bodies ranging in size from dust grains to several kilometers.
The planetesimals continued to collide and merge, gradually building up the planets we see today. In the inner regions of the solar system, where it was hotter, the terrestrial planets like Earth, Mercury, Venus, and Mars formed, mostly consisting of rock and metal. In the outer regions, where it was colder, the giant planets like Jupiter and Saturn formed, mainly consisting of hydrogen and helium gas.
So, to summarize, the planets in the solar system formed from the clumping together of materials in the protoplanetary disks around the early sun, due to the force of gravity.