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Chapter 7
Horizons Exploring the Universe 12e
10
Astronomy
Undergraduate 1
10/23/2011

Additional Astronomy Flashcards

 


 

Cards

Term
Photoshere
Definition
The bright visible surface of the sun
Term
Corona
Definition
On the sun, the faint outer atmoshpere composed of low-density, high temp. gas
Term
Chromoshpere
Definition
Bright gases just above the photoshere of the sun
Term
Granulations
Definition
The fine structure of bright grains covering the sun's surface.
Term
Supergranule
Definition
Very large convective features in the sun's surface
Term
Convection
Definition
Circulation in a fluid driven by heat. Hot material rises and bool material sinks
Term
Magnetic Carpet
Definition
The network of small magnetic loops that covers the solar surface
Term
Helioseismology
Definition
The study of the interior of the sun by the analysis of its modes of vibrations
Term
Dynamo effect
Definition
The process by which a rotating convecting body of conducting matter, such as the Earth core, can generate a magnetic field
Term
Why can't you see deeper into the Sun's photosphere?
Definition
Light moving through the sun's outer layers keep changing the direction that the photons move through, so you don't get information about what was at lower depths inside the sun. You just see the hot outermost layer: the photosphere.
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