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what two items on the list below are in balance in what we call gravitational equilibrium?

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What Two Items On The List Below Are In Balance In What We Call Gravitational Equilibrium??

The energy that is released in the hydrogen fusion reaction comes from ___________. The difference in mass between the four hydrogen nuclei and the single resulting helium nucleus. What two items are in balance in what we call ‘gravitational equilibrium‘? Gas pressure and Gravity.The energy that is released in the hydrogen fusion reaction

fusion reaction
Efficiency values depend on design details but may be in the range of ηheat = 0.7 (70%) and ηelec = 0.4 (40%). The purpose of a fusion reactor is to produce power, not to recirculate it, so a practical reactor must have frecirc = 0.2 approximately. Lower would be better but will be hard to achieve.

What two physical processes balance each other to create the condition known as hydrostatic equilibrium?

The simple model of any main sequence star is of a dense gas/fluid in a state of hydrostatic equilibrium. The inward acting force, gravity, is balanced by outward acting forces of gas pressure and the radiation pressure.

What do we mean when we say that the Sun is in gravitational equilibrium?

What do we mean when we say that the Sun is in gravitational equilibrium? There is a balance within the Sun between the outward push of pressure and the inward pull of gravity. … The amount of energy released by fusion in the Sun’s core equals the amount of energy radiated from the Sun’s surface into space.

Which of the following lists the layers of the Sun in order from innermost to outermost quizlet?

Convection currents carrying hot material to the star’s surface. Which of the following lists the layers of the Sun in order from innermost to outermost. Core, Radiation Zone, Convection Zone, Photosphere, Chromosphere, Corona.

Which of the following correctly describes how the process of gravitational contraction can make?

Which of the following correctly describes how the process of gravitational contraction can make a star hot? When a star contracts in size, gravitational potential energy is converted to thermal energy. You just studied 26 terms!

Which of the following lists the stages of life for a low mass star in the correct order?

Which of the following lists the stages of life for a low-mass star in the correct order? protostar, main-sequence star, red giant, planetary nebula, white dwarf. the core shrinks while the rest of the star expands.

What is the name of the process that maintains the balance between opposing forces in the Sun?

1: Diagram showing the balance of gravitational forces (contraction) with fusion (expansion) that is maintained to keep Sun stable and fusion burning.

How do we know what goes on under the surface of the Sun?

How do we know what goes on under the surface of the Sun? … By measuring Doppler shifts, we observe vibrations of the Sun’s surface that are created deep within the Sun. In the late 1800s, Kelvin and Helmholtz suggested that the Sun stayed hot thanks to gravitational contraction.

Why is it that neutrinos can tell us about conditions at the core of the sun?

Because they travel so fast and interact so rarely with matter, neutrinos pass from the core of the Sun to the surface in only two seconds. … If you could detect them, the neutrinos would tell you about the conditions in the Sun’s core as it was only 8.5 minutes ago (much more current information than the photons!).

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Why couldnt you stand on the Sun’s surface quizlet?

Why couldn’t you stand on the Sun’s surface? The Sun doesn’t have a solid surface. transition zone. the total energy emitted by the Sun in all directions.

Which layer of the Sun has the lowest density?

The core has the highest density and the corona has the lowest density. As you have correctly answered, the Sun’s temperature drops from the core to the surface, which is the photosphere.

Which part of the Sun has the lowest density?

What is the corona? It is the outermost layer of the Sun’s “atmosphere”; lowest-density part of the Sun, emits most of the Sun’s X-rays.

What are the 3 layers of the Sun’s atmosphere in order of increasing distance from the surface?

In order of increasing distance from the center of the Sun, they are the photosphere, with a temperature that ranges from 4500 K to about 6800 K; the chromosphere, with a typical temperature of 104 K; the transition region, a zone that may be only a few kilometers thick, where the temperature increases rapidly from 104

How does the gravitational contraction of an object release energy and heat it?

-Gravitational contraction involves the generation of heat by chemical reactions, much like the burning of coal. -When a star contracts in size, gravitational potential energy is converted to thermal energy. -Gravitational contraction involves nuclear fusion, which generates a lot of heat.

When was gravitational contraction an important energy generation mechanism for the Sun?

The gravitational contraction was an important energy-generation mechanism for the sun when e) when the Sun was being formed from a collapsing cloud of gas. This is consistent with the solar nebular hypothesis. In fact, the gravitational contraction got intense enough to jumpstart a nuclear fusion reaction.

What important forces balance each other within a star as it reaches its equilibrium condition?

Hydrostatic Equilibrium: In the interior of a star, the inward force of gravity is exactly balanced at each point by the outward force of gas pressure. The mutual gravitational attraction between the masses of various regions within the Sun produces tremendous forces that tend to collapse the Sun toward its center.

What are the low mass stars?

Low mass stars (stars with masses less than half the mass of the Sun) are the smallest, coolest and dimmest Main Sequence stars and orange, red or brown in colour. Low mass stars use up their hydrogen fuel very slowly and consequently have long lives.

What elements do low mass stars produce?

Low-mass stars eject large amounts of helium, carbon, and nitrogen produced in the shell burnings. The process is more gradual than for high-mass stars; the ejection of the stellar envelope lasts more than 100,000 years, compared with a few seconds for a core-collapse supernova.

What are the life stages of a low mass star quizlet?

Terms in this set (5)
  • Star Forming Nebula.
  • Nuclear Fusion Begins, Protostar.
  • Core Pressure Balances Gravity, Main Sequence Star aka adult.
  • Fuel Runs Out, Forces Unbalanced, Red Giant.
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What are the two end products of fusion in the Sun?

Nuclear fusion, the source of all the energy so generously radiated by the Sun, does two things: it converts hydrogen into helium (or rather, makes helium nuclei from protons) and it converts mass to energy.

Which of the following are products of fusion in the Sun?

helium
The specific type of fusion that occurs inside of the Sun is known as proton-proton fusion. Inside the Sun, this process begins with protons (which is simply a lone hydrogen nucleus) and through a series of steps, these protons fuse together and are turned into helium.Jun 16, 2020

What are the two forces in balance in the Sun?

Hydrostatic Equilibrium, a balance between pressure and gravity. Inward force of gravity is equal to the outward force of pressure created by fusion.

What does the granulation tell us about the layers below the photosphere?

What does the granulation tell us about the layers below the photosphere? Since granules on the sun’s photosphere are constantly growing and shrinking, astronomers can assume that convection currents are happening below it, where the gas rises and falls due to heat.

Why can’t we see the material below the Sun’s photosphere?

Since the Sun is made up of hot gas, there isn’t really a “surface” to it. Instead, as you move from space toward the Sun’s core, the gas gets denser and denser. The photosphere represents the depth at which we can see no deeper toward the core of the Sun.

What is happening on the surface of the Sun?

The Surface: On the surface of the Sun, gases move in a rolling motion called convection. These convection cells can be seen as solar granules that are several thousand miles across, and change shape within a few minutes. You can see the same kind of motion by looking at the water in a boiling pot of water.

What is neutrino used for?

It’s called the neutrino. Neutrinos have the potential to do amazing things like speed up global communication, detect the presence of nuclear weapons, and even confirm the presence of elusive dark matter.

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What is neutrino and antineutrino?

An antineutrino is the antiparticle partner of the neutrino, meaning that the antineutrino has the same mass but opposite “charge” of the neutrino. Although neutrinos are electromagnetically neutral (they have no electric charge and no magnetic moment), they may carry another kind of charge: lepton number.

What was the solar neutrino problem that was suggested by early neutrino observations?

The solar neutrino problem concerned a large discrepancy between the flux of solar neutrinos as predicted from the Sun’s luminosity and as measured directly. The discrepancy was first observed in the mid-1960s and was resolved around 2002.

What happens to light passing through even thin clouds of dust?

What effect do even thin clouds of dust have on light passing through them? It dims and reddens the light of all more distant stars. Hydrogen is the major gas in the interstellar medium. There is as much mass in the voids between the stars as in the stars themselves.

What is proper motion quizlet?

The proper motion is the angular motion per year of the star. Once the radial velocity and transverse velocities are known, the space motion of the star is calculated using the Pythagorean theorem (square root of the sum of the squares of the velocities).

What is the correct order of the sun’s layers from the inside out?

The inner layers are the Core, Radiative Zone and Convection Zone. The outer layers are the Photosphere, the Chromosphere, the Transition Region and the Corona. IRIS will focus its investigation on the Chromosphere and Transition Region.

Which of the following particles has the lowest mass astronomy?

Neutrinos are the least massive of the known elementary particles, with the exception of those thought to be completely massless, such as the photon. Physicists know that neutrinos come in three possible masses, but directly measuring these has been a challenge.

Which of the following layers of the Sun has the least dense gases?

The plasma (electrically charged gas) in the chromosphere has a very low density. It is about ten thousand times less dense than the underlying photosphere, and more than a million times less dense than Earth’s atmosphere.

Does the sun have density?

Being a star, the sun’s density varies considerably between its outer layers and its core. On average, it has a density of 1.408 g/cm3, which is roughly one-quarter that of Earth.

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