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Chp 16 the sun
CHP 16 study for test 2
20
Astronomy
Undergraduate 4
10/29/2009

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Term
Q..The temperature of the Sun's atmosphere increases with height above the chromosphere

T or F CHP16.1
Definition
TRUE
Term
Q..Which layer of the sun did the photons that reach our eyes scatter?
Definition
Photosphere
Term
Q..region of the sun that produces an emission line spectrum
Definition
Chromosphere
Term
Q..Hypothesis that strong magnetic fields exist near sunspots is confirmed by _______ observed in spectra
Definition
ZEMAN EFFECT
Term
Q..Most direct evedience that nuclear reactions are occuring in suns core
Definition
Neutrinos emitted from core
Term
Q..Sunspots occur how many years
Definition
11 yrs
Term
Q..strongest absorption lines in the solar spectrum are cause by hydrogen
T or F
Definition
False
Term
Q..zones are in the interior of sun
Definition
3
Term
Radius of sun
Rotation
CHP16.1
Definition
700,000 km
once a month
Term
What takes place in the core CHP16.1
Definition
Nuclear Fusion
Term
Luminosity CHP16.1
Definition
total energy radiated by the Sun— can be calculated from the fraction of that energy that reaches Earth
Term
Equilibrium CHP16.2
Definition
Inward Gravitational force is balanced by outward pressure
Term
the sun has how many lines from elements?
Definition
67
Term
Photosphere CHP16.1
Definition
surface of the sun, electromagnetic radiation can escape- part of sun we see
Term
corona CHP16.1
Definition
cool lower atmosphere
Term
Sunspots
Definition
Earth sized low heat spots of sun
Term
Neutrinos
Definition
pass from core of sun and out w/o being interfered with by atoms and make it to us
Term
Coronal Mass Ejections
Definition
huge blobs of magnetized gas escaping into interplanetary space. most of the solar wind flows outward from low density regions of the corona called coronal holes
Term
nuclear fusion
Definition
hydrogen into helium in core
Term
energy of sun
Definition
comes from the initial mass > final mass
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