- Formation begins and gravity causes the nebula to contract. …
- gravity pulls in the mass of the nebula in, then starts spinning, then the disk forms (planetary, solar disk); gravitational energy gets converted to thermal energy (heat); gets so hot, then nuclear fusion, then the sun is born.
What is the order of the nebular theory?
The
first is that the planets all rotate in the same direction
. The second is that they all orbit within 6 degrees of a common plane. The third is that all the terrestrial planets, which are those within the orbit of the Asteroid Belt, are rocky, while those outside it are gaseous.
How many steps are in the nebular theory?
7 Steps
of the Nebular Theory.
What are the five steps of the nebular theory?
- step one(4) -The solar nebula consisted of. -hydrogen,
- step two(2) -A disturbance.
- step three(2) -The solar nebula assumed a flat, disk shape.
- step four(2) -Inner planets began to form from metallic.
- step five(2) -Larger outer planets began forming from fragments.
What are the 6 stages of the nebular theory?
- Nebula, protosun forming, spinning planetary disk, protoplanets forming,
- Shock waves from a nearby supernova explosion.
- It also begins to flatten.
- Protosun.
- When the gravitational forces begin to fuse hydrogen into helium (fusion)
- Protoplanets.
- Inner protoplanets – most of their lightweight gases are boiled away,
What are the three basic steps to the nebular theory?
- Condensation.
- Accretion.
What are the 4 steps of the nebular theory?
- step one(4) -The solar nebula consisted of. -hydrogen,
- step two(2) -A disturbance.
- step three(2) -The solar nebula assumed a flat, disk shape.
- step four(2) -Inner planets began to form from metallic.
- step five(2) -Larger outer planets began forming from fragments.
What is the evidence of nebular theory?
What Evidence do we have of a Nebular Theory-type development? We have
observed discs of gas and dust around other stars
. We can also see evidence of stars and planets forming in clouds of gas and dust; young planet systems in the making are called Proplyds.
What does the nebular theory predict?
The nebular theory predicted
the existence of the Kuiper belt 40 years before it was discovered
! There were many more leftover planetesimals than we see today. Most of them collided with the newly-formed planets & moons during the first few 108 years of the Solar System.
Why is the nebular hypothesis accepted?
The nebular theory holds that
the solar system formed from the gravitational collapse of a great, giant cloud of gas and dust
. This theory is widely accepted by scientists today because of its success in explaining the major characteristics of our solar system.
What is the first step in the nebular theory?
The Nebular Theory would have started with
a cloud of gas and dust
, most likely left over from a previous supernova. The nebula started to collapse and condense; this collapsing process continued for some time. The Sun-to-be collected most of the mass in the nebula’s center, forming a Protostar .
What is the passing star theory?
Passing Star Theory
A star with a greater gravitational pull passed near the sun
. It attracted large quantities of gaseous materials from the sun. The materials split, cooled and condensed to form planets.
What is solar nebula theory?
Solar nebula, gaseous cloud from which, in the so-called nebular hypothesis of the origin of the solar system,
the Sun and planets formed by condensation
. Swedish philosopher Emanuel Swedenborg in 1734 proposed that the planets formed out of a nebular crust that had surrounded the Sun and then broken apart.
Which planet has the shortest day?
Jupiter
is the fastest spinning planet in our Solar System, rotating on average once in just under 10 hours. That is very fast, especially considering how large Jupiter is. This means that Jupiter has the shortest day of all the planets in the Solar System.
What force causes the nebula to begin to contract?
I. Contraction of insterstellar cloud. Solar system formed about 4.6 billion year ago, when
gravity
pulled together low-density cloud of interstellar gas and dust (called a nebula)(movie).
What is a Protosun?
: protostar especially :
the gaseous cloud that underwent gravitational collapse to form the sun
.
