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A protogalactic cloud is a cloud consisting of approximatel 70% hydrogen and 30% helium. These clouds formed in the early universe and are the building blocks of galaxies. In the early universe tiny differences in temperature and pressure (see cosmic microwave background) caused newly formed matter to clump together into large gas clouds. As these clouds gained mass they began to collapse under their own gravity. The centre of the collapsing clouds condensed and formed early stars. The high pressures caused further collapse and both free gasses and early stars further collapse to form a giant black hole. The gravitational effects of this black hole cause the cloud to begin rotating. The rotation causes what is known as an accretion disc. This disk forms the plane of the galaxy which will one day contain the spiral arms. Over time gravity causes dense clumps of gas to collect and stars form. Over billions of years this process forms the spiral galaxies we see today. Elliptical galaxies are formed by the collapse of two or more spiral galaxies into one another.
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Which formation theory suggests that galaxies formed when massive Protogalactic cloud fragmented into smaller gas clouds that then formed into individual galaxies?
The formation theory that suggests galaxies formed when massive protogalactic clouds fragmented into smaller gas clouds is known as the "top-down" model of galaxy formation. In this model, the initial large structures collapse under gravity, leading to the creation of smaller, individual galaxies as these gas clouds cool and condense. This theory contrasts with the "bottom-up" model, where smaller structures merge to form larger galaxies over time.
What is the name of a regular rain or snow cloud?
the name of the cloud full of rain isz cumulus....misz.remynisce
Is the cirrus cloud the highest cloud?
No, the highest cloud is the noctilucent cloud, which forms in the mesosphere. Cirrus clouds are high altitude clouds, but not the highest.
What is it called when lighting strikes within one cloud?
When lightning strikes within one cloud, it is called intra-cloud lightning. This type of lightning occurs when the electric charge within a cloud becomes unbalanced and discharges within the same cloud, rather than traveling to the ground or to another cloud.
What is the charge on the cloud or shell of the atom?
The charge of an electron cloud is negative. The electron cloud is made up of electrons, and the electrons are negatively charged. The electron cloud will have a negative charge as well.
What is a gaseous cloud of helium and hydrogen that eventually condensed down to form the stars in galaxies?
protogalactic cloud
Is a protogalactic cloud with very little angular momentum is more likely to form an elliptical galaxy or a spiral galaxy?
The higher gas density forms stars more efficiently, so all the gas is converted into stars before a disk can form.
What types of protogalactic clouds is most likely to form an elliptical galaxy?
Protogalactic clouds that have a high angular momentum and a significant amount of gas and dust are more likely to form an elliptical galaxy. These clouds experience rapid, chaotic collapse and undergo turbulent mixing, leading to the formation of a dynamically relaxed and spheroidal galaxy like an elliptical. Moreover, a low rate of ongoing star formation and a lack of well-defined spiral structure are characteristics of elliptical galaxies, which can be traced back to the properties of the protogalactic clouds.
Which formation theory suggests that galaxies formed when massive Protogalactic cloud fragmented into smaller gas clouds that then formed into individual galaxies?
The formation theory that suggests galaxies formed when massive protogalactic clouds fragmented into smaller gas clouds is known as the "top-down" model of galaxy formation. In this model, the initial large structures collapse under gravity, leading to the creation of smaller, individual galaxies as these gas clouds cool and condense. This theory contrasts with the "bottom-up" model, where smaller structures merge to form larger galaxies over time.
Protogalactic clouds that have large amounts of angular momentum may develop into what?
Protogalactic clouds with large amounts of angular momentum may develop into spiral galaxies. The conservation of angular momentum allows these clouds to rotate and flatten, leading to the formation of rotating disks. As gas and dust within these clouds condense and cool, they trigger star formation, contributing to the characteristic structure of spiral galaxies.
What is an Adjective for a cloud?
rain cloud fluffy cloud dark cloud wispy cloud
What is it when lightning strikes within one cloud?
It's called in-cloud or cloud-to-cloud lightning.
When lightning strikes within one cloud it is called .?
It's called in-cloud or cloud-to-cloud lightning.
Is cloud a preposition?
Yes, "cloud" can function as a preposition when used in phrases like "in the cloud" or "above the cloud." In these cases, it shows the relationship between an object and its location in relation to the cloud.
How do spirals form?
Spiral galaxies form from the collapse of a protogalactic cloud. Spiral galaxies consist of three components: a rotating disk, a bulge and a halo. Spiral galaxies, like the Milky Way, owe their shape to stars inside the protogalaxy developing at different intervals. The gas between forming stars continues to be compressed, and the resulting gravitational differences manhandle the protogalaxy's stars, dust and gas. When the protogalactic cloud collapses, the stars in the bulge and halo form first. These stars have rather random orbits around the galactic center. The galactic center probably contains a supermassive black hole, which likely exerts some gravitational influence on the formation of a spiral galaxy. The remainder of the cloud forms a disk due to the conservation of angular momentum (the same effect as the spinning up of the dancer when she pulls her arms inside). This motion forces everything into a rotating disk, and additional differences in gravity build the spiral arms. Oppositely, when a protogalaxy's stars develop at the same time, you have an elliptical galaxy on your hands. The stars in the disk form later and thus the disk population of stars are younger than those in the bulge and the halo. Further, the stars in the disk rotate around the center of the galaxy in a collective, well defined way unlike the stars in the bulge and halo.
What is cloud to cloud lightning called?
Cloud-to-cloud lightning is commonly referred to as intracloud lightning because it occurs entirely within the same cloud without reaching the ground.
How many different types of lighting strikes are there?
There are three main types of lightning strikes: cloud-to-ground strikes, intra-cloud strikes, and cloud-to-cloud strikes. Cloud-to-ground strikes are the most common and well-known type, where lightning extends from the cloud to the ground. Intra-cloud strikes occur within the cloud itself, and cloud-to-cloud strikes happen between different clouds.
