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ch 30 earth space, the sun
the sun
10
Biology
11th Grade
01/20/2010

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Term
Photosphere
Definition
The lowest layer of the Sun's athmosphere, approx: 400 km in thickness
Term
Chromosphere
Definition
Above the photosphere, approx: 2500 km thickness amd and has a temp of nearly 30000K at the top. visiable at solar eclispe
Term
corona
Definition
top layer of the Sun's athmosphere,extends several million kilometers from the top of the chromosphere and has a temperature rang of 1 million to 2 million K.
Term
Solar Flares
Definition
violent eruptions of particles and radiation from the surface of the sun...Earth can be bombared with them
Term
Solar Wind
Definition
Gases that flow outward from the corona at high speeds
Term
Sunspots
Definition
dark spots on the surface of the photosphere....but actually very bright
Term
Prominence
Definition
which is an arc of gas that is ejected from the chromosphere, or gas that condenses in an inner corona and rains back on surface . Can reach up to 50000 K and can last for a few hours to a few months.
Term
Fusion
Definition
combo of lightweight nuclei, such as hydrogen, into heavier nuclei
Term
Fission
Definition
Opposite of Fusion, splitting of heavy atomic into smaller, lighter atominc nuclei
Term
Spectrum
Definition
visible light arranged according to wavelenghts
3 types: continous,emission, and absorption
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