What Two Factors Cause A Nebula To Develop Into A Star


What 2 factors cause a nebula to develop into a star?

Gravity and heat cause a nebula to develop into a star.

What object is created during the formation of a star?

During the time a dense core is contracting to become a true star but before the fusion of protons to produce helium begins we call the object a protostar.

What caused the nebula to collapse and start spinning?

Shock waves from the explosion compressed the cloud of gas and dust. Compression made the cloud collapse as gravity pulled the gas and dust together forming a solar nebula. Just like a dancer that spins faster as she pulls in her arms the cloud began to spin as it collapsed.

What are the 2 reasons molecular clouds are the perfect place for star formation?

Molecular clouds are favorable locations for star formation for two reasons: low temperature and high density.

How are stars formed from Nebula?

Star Forming Nebula

These knots contain sufficient mass that the gas and dust can begin to collapse from gravitational attraction. As it collapses pressure from gravity causes the material at the center to heat up creating a protostar. One day this core becomes hot enough to ignite fusion and a star is born.

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What caused the first stars to form quizlet?

Hydrogen and helium gas in these clouds formed the first stars. Supernova explosions from the first stars kept much of the gas from forming stars. Leftover gas settled into a spinning disk due to the conservation of angular momentum.

What causes a star to shine brightly Edgenuity?

What causes a star to shine brightly? … The star’s core shrinks. The star becomes a black hole.

How does gravity cause star formation?

As gravity compresses the core of a protostar the temperature goes higher and higher. Eventually the temperature is high enough that the star starts fusing hydrogen into helium. When the outward pressure produced by the heating of the gas by fusion energy balances gravity a stable star is formed.

When a nebula collapses inward which processes occur?

4. As the nebula “falls” inward gravitational potential energy is converted to heat. In the absence of a net torque the total angular momentum of a system remains constant. As the nebula collapses clumps of gas collide & merge.

What force causes particles in a nebula to condense over time?


According to the nebula hypothesis the Solar System began as a nebula an area in the Milky Way Galaxy that was a swirling concentration of cold gas and dust. Due to some perturbation possibly from a nearby supernova this cloud of gas and dust began to condense or pull together under the force of its own gravity.

What causes dark nebula?

What causes a dark nebula? They are caused by interstellar clouds with a very high concentration of dust grains obscuring light. These dust clouds obscure and block visible light objects behind it. Such as background stars or emission or reflection nebulae.

What happens when a nebula begins to contract?

As the nebula contracts whatever initial tumbling/rotational motion is increased to conserve angular momentum (just like when a spinning figure skater brings in their arms). The nebula flattens into a disk. Gravitational contraction also causes the pressure to increase which causes the cloud to heat up.

Is a molecular cloud a nebula?

molecular cloud also called dark nebula interstellar clump or cloud that is opaque because of its internal dust grains. The form of such dark clouds is very irregular: they have no clearly defined outer boundaries and sometimes take on convoluted serpentine shapes because of turbulence.

How does a star form from a nebula quizlet?

1b How how does a star form from a nebula? When the contracting gas and dust from nebula become so dense and hot that nuclear fusion starts. … A protostar is a contracting cloud of gas and dust with enough mass to form a star while a star is made up of large amount of gas and relatively small volume.

What happens during the nebula stage of a star?

Over time the hydrogen gas in the nebula is pulled together by gravity and it begins to spin. As the gas spins faster it heats up and becomes as a protostar. Eventually the temperature reaches 15 000 000 degrees and nuclear fusion occurs in the cloud’s core.

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Are stars formed in emission nebulae?

Most emission nebulae are the sites of recent star formation where hot energetic radiation streaming from the newborn stars sculpts a nebula’s bright and dark clouds into intriguing (and sometimes mystifying) shapes.

Where is star formation most likely to occur in our galaxy quizlet?

The clouds and interstellar gas and dust. Where does most star formation occur in the Milky Way galaxy today? In the spiral arms.

Which of these describes a nebula?

A nebula is an enormous cloud of dust and gas occupying the space between stars and acting as a nursery for new stars. The roots of the word come from Latin nebula which means a “mist vapor fog smoke exhalation.” Nebulae are made up of dust basic elements such as hydrogen and other ionized gases.

Where does most of the star formation occur in a spiral galaxy?

spiral arms

The final aspect of the formation of spiral galaxies is the on-going star formation evident in their thin disks. This star formation is usually on the leading edge of the spiral arms where the cold gas of the thin disk is compressed and provides unequivocal evidence for on-going secular evolution in thin disks.

What describes the process that causes a star to shine?

This process is called nuclear fusion. Every second a star like our Sun converts 4 million tons of its material into heat and light through the process of nuclear fusion.

What term describes the process that causes a star to shine?

The light waves from a star appear to have shorter wavelengths as the star moves toward Earth. … The gas is so hot it causes nuclear fusion and nuclear fusion causes stars to shine.

What is the main element that stars are made of Brainly?

Hydrogen is the main element that stars are made of.

How are stars formed?

Stars form from an accumulation of gas and dust which collapses due to gravity and starts to form stars. … Stars like our own Sun have not always been around. Stars are born and die over millions or even billions of years. Stars form when regions of dust and gas in the galaxy collapse due to gravity.

What gases are in a nebula?

How do stars form in a nebula? Nebulae are made of dust and gases—mostly hydrogen and helium. The dust and gases in a nebula are very spread out but gravity can slowly begin to pull together clumps of dust and gas.

What causes a lot of energy to be produced in a stars core?

Many stars produce much more energy than the Sun. The energy source for all stars is nuclear fusion. … In a nuclear fusion reaction the nuclei of two atoms combine to create a new atom. Most commonly in the core of a star two hydrogen atoms fuse to become a helium atom.

What causes the flattening of the solar nebula into a disk?

Why did the solar nebula flatten into a disk? The force of gravity from the planets pulled the material downward into a flat disk. It flattened as a natural consequence of collisions between particles in the spinning nebula changing random motions into more orderly ones.

Why did the solar nebula heat up as it collapsed quizlet?

Why did the solar nebula heat up as it collapsed? As the cloud shrank its gravitational potential energy was converted to kinetic energy and then into thermal shock. … It flattened as a natural consequence of collisions between particles in the nebula changing random motions into more orderly ones.

When a planetary nebula gravitationally contracted to form our solar system what caused the central region to rotate faster and flatten into a plane?

When a planetary nebula gravitationally contracted to form our solar system what caused the central region to rotate faster and flatten into a plane? The conservation of angular momentum. Jupiter rotates once every 10 hours more than twice as fast as the Earth.

What two forces caused the solar nebula to develop into the sun?

Energy from collisions and pressure from gravity caused the center of the solar nebula to become hotter and denser.

Which two forces cause the gas and dust in nebula to form solar systems?

Solar systems form from nebulas. The gas and dust in nebulas become solar systems because of two forces: gravity and pressure. Remember that gravity pulls objects together. The particles of matter in a nebula are very small.

What causes a solar nebula to initially begin to?

Scientists believe that the solar system was formed when a cloud of gas and dust in space was disturbed maybe by the explosion of a nearby star (called a supernova). … Squeezing made the cloud start to collapse as gravity pulled the gas and dust together forming a solar nebula.

Do dark nebulae form stars?

Dark nebulae are interstellar clouds that contain a very high concentration of dust. … The average temperature inside a dark nebula ranges from about 10 to 100 Kelvin allowing hydrogen molecules to form and star formation to take place.

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Where are stars born?

Star Formation

Stars are born within the clouds of dust and scattered throughout most galaxies. A familiar example of such as a dust cloud is the Orion Nebula. Turbulence deep within these clouds gives rise to knots with sufficient mass that the gas and dust can begin to collapse under its own gravitational attraction.

What type of process drives star formation in Dark Nebula?

The deep cold also causes the gas to clump to high densities. When the density reaches a certain point stars form. Since the regions are dense they are opaque to visible light and are known as dark nebula. … Star formation begins when the denser parts of the cloud core collapse under their own weight/gravity.

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