What does the nebular theory explain?
What does the nebular theory explain?
The nebular hypothesis is the idea that a spinning cloud of dust made of mostly light elements, called a nebula, flattened into a protoplanetary disk, and became a solar system consisting of a star with orbiting planets [12].
What is condensation in astronomy?
Condensation is the process of forming solid particles from the solar nebula, whereas the solar nebula is a cloud of interstellar gas and dust that condensed to form the entire solar system, including the sun and planets.
How the condensation theory explains the observed features of the present day solar system?
Describe the basic features of the condensation theory of the formation of the solar system. After the solar nebula formed, cooled dust grains formed condensation nuclei around which matter began to accumulate. As they grew larger collisions and accumulation increased until fragmentation occurred and planets formed.
What is the key ingredient in the modern condensation theory?
The key ingredient in the modern Condensation Theory is dust, which helps to cool the gas, and forms the nuclei for planetesimals to grow.
What is the difference between nebular hypothesis and solar nebula theory?
The nebular hypothesis is the most widely accepted model in the field of cosmogony to explain the formation and evolution of the Solar System (as well as other planetary systems). The widely accepted modern variant of the nebular theory is the solar nebular disk model (SNDM) or solar nebular model.
What is the difference between condensation and accretion?
Condensation is the building of larger particles one atom (or molecule) at a time, whereas accretion is the sticking together of larger particles. The planets swept up gas, dust, and small particles.
What role did condensation temperatures play in the formation of the planets?
As the solar nebula began to rotate more rapidly, it also tended to flatten out, forming a planetary disk. In the inner part of the solar system where the temperature was high, only substances with high-condensation temperatures could become planets.
Why is dust important to the condensation sequence?
Why is dust important to the condensation sequence? (a) Without dust, water vapor in Earth’s atmosphere would never have fallen to the surface as liquid water.
Why do nebulas spin faster?
Why does a nebula spin faster as it contracts? A nebula spins faster as it contracts because of the conservation of angular momentum.
What lucky factor prevented the Chelyabinsk object?
What lucky factor prevented the Chelyabinsk object from causing much damage at ground level? It hit Earth at an oblique angle and thus exploded high in the air. You just studied 60 terms!
What is the process of condensation and how does it happen?
To put it simply, the process of condensation occurs when gaseous water vapor turns to liquid. Condensation is the result when warm air containing tiny molecules of water vapor has been cooled. As warm air rises within the atmosphere, cool air falls, and the cooled water molecules condense.
What does best describe condensation?
Condensation is the process of water vapor turning back into liquid water, with the best example being those big, fluffy clouds floating over your head. And when the water droplets in clouds combine, they become heavy enough to form raindrops to rain down onto your head.
What is the top down theory?
In top-down theories of structure formation, large objects the size of superclusters of galaxies form first and these then fragment to form smaller structures like galaxies. The adjacent figure illustrates the basic idea.
What are the two types of condensation?
Types of condensation. Two types of condensation exist: visible and concealed. Visible condensation occurs on surfaces as water, frost, and ice. You may see it on insulation vapor retarders, skylights, cold water pipes, and cooling ducts. Concealed condensation is more damaging and difficult to deal with.
