The light we see from the sun comes from which layer |
photosphere |
Temperature of the layer of gas that produces the visible light from the sun |
5800k |
why cant you stand on the sun |
the sun doesnt have a solid surface |
how many planets can fit in the sun? |
little over a million |
The density of the Sun is most similar to which object |
jupiter |
the area in the suns atmosphere above the chromosphere is |
the transition zone |
wjay percent of incoming energy from the sun reaches the earth |
50-70 percent |
the solar constant is a measure of |
energy recieved by the sun at the location of earth |
the luminosity of the sun is a measure of |
the total energy of the emitted by the sun in all directions |
which is the correct order of the structure of the sun |
radiative convection chromosphere |
By what mechanism does solar energy reach the Sun’s photosphere from the layer just underneath it? |
convection |
Hydrostatic equilibrium in our Sun is the balance between |
gravitation and pressure |
The vibrations of the Sun reveal information about |
the interior structure of the sun |
What two energy transport mechanisms, in order from outside the core to the surface, is found in the Sun? |
the Sun is hottest somewhere between its surface and its core |
What two energy transport mechanisms, in order from outside the core to the surface, is found in the Sun? |
radiative diffusion, convection |
What is the size of a typical granule or convection cell seen in the photosphere? |
1,000 km |
The pattern of rising hot gas cells all over the photosphere is called: |
granulation |
The outward pressure of hot gas in the Sun |
is balanced by the inward gravitational pressure. |
When the chromosphere can be seen during a solar eclipse, it appears: |
red |
From where does most of the solar wind flow? |
coronal holes |
What is it about the Sun’s corona that astronomers don’t understand? |
The corona is much hotter than layers of the Sun that are closer to the solar interior. |
When we glimpse the chromosphere at the start and end of totality, its color is |
red, due to ionized hydrogen at lower pressure. |
The percentage (by mass) of the Sun that is Hydrogen is about |
71 |
The percentage (by number of atoms) of the Sun that is Hydrogen is about |
91 |
The percentage (by mass) of the Sun that is Helium is about |
27 |
A loop of gas following the magnetic field lines between sunspots’ poles is |
prominence |
How long does the sunspot cycle last, on average? |
11yrs |
Visible sunspots lie in the |
granulation in the photosphere. |
As the Sun rotates, an individual sunspot can be tracked across its face. From eastern to western limb, this takes about |
2weeks |
The most striking example of solar variability was the |
Maunder Minimum from 1645-1715. |
sunspots |
come in pairs, representing the north and south magnetic fields. |
Sunspots are dark splotches on the Sun. Which statement is true? |
They are extremely hot, but cooler than the surrounding areas of the Sun. |
How would sunspots appear if you could magically remove them from the Sun? |
They would shine bright orange in color, like Arcturus. |
While observing the Sun, you note a large number of sunspots. What can you conclude? |
There are likely to be an above average number of flares and prominences. |
The numbers of sunspots and their activity peak about every: |
11yrs |
Loops of glowing hydrogen seen hanging over the solar limb during totality are: |
prominences |
During a period of high solar activity, the corona |
is more irregular |
The solar winds blow outward from |
cotonal holes |
Which of these are not associated with the active Sun? |
granulation |
Suppose a large flare is detected optically. How long until radio interference arrives? |
simultaneously |
Which of the following is NOT a property of neutrinos? |
cannot interact at all with normal matter |
The critical temperature the core must reach for a star to shine by fusion is |
10 million K. |
In the proton-proton cycle, the helium atom and neutrino have less mass than the original hydrogen. What happens to the "lost" mass? |
its converted to energy |
The primary source of the Sun’s energy is |
the strong force fusing hydrogen into helium. |
In the proton-proton cycle, the positron is |
an anti-electron. |
What natural barrier tries to prevent two protons from combining? |
electromagnetic repulsion |
The critical temperature to initiate the proton-proton cycle in the cores of stars is: |
10 million K. |
Which is the net result of the proton-proton chain? |
4 protons = 1 helium 4 + 2 neutrinos + gamma rays |
The speed of light is 3.00 × 108 m/s. If 2.00 kg of mass is converted to energy, how much energy will be produced? |
1.80 ×1017 J |
chapter16
Share This
Unfinished tasks keep piling up?
Let us complete them for you. Quickly and professionally.
Check Price