Stars

Front 1

Doppler effect

Back 1

the apparent change in frequency of electromagnetic or sound waves.

Front 2

Photosphere

Back 2

Temperature and destiny of the sun's atmosphere.

Front 3

Chromospheres

Back 3

The sphere of color" the region of The sun that is located between the photosphere and the corona.

Front 4

Corona

Back 4

A faintly colored luminous ring appearing to surround a celestial body visible through a haze or thin cloud.

Front 5

Solar wind

Back 5

A stream of high-speed, ionized particles ejected primarily from the sun's corona.

Front 6

Sunspot

Back 6

Any of the relatively cool dark spots appearing periodically in groups on the surface of the sun that are associated with strong magnetic fields.

Front 7

Prominence

Back 7

A tonguelike cloud of flaming gas rising from the sun's surface.

Front 8

Solar Flare

Back 8

A sudden eruption of magnetic energy released on or near the surface of the sun.

Front 9

Aurora

Back 9

A luminous atmospheric phenomenon appearing as streamers or bands of light sometimes visible in the night sky in northern or southern regions of the earth.

Front 10

Nuclear Fusion

Back 10

A nuclear process whereby several small nuclei are combined to make a larger one whose mass is slightly smaller than the sum of the small ones.

Front 11

Spectroscopy

Back 11

Conjunction with telescopes to obtain observational data on the velocities and physical conditions of astronomical objects.

Front 12

Spectrum

Back 12

the distribution of energy emitted by a radiant source, as by an incandescent body, arranged in order of wavelengths.

Front 13

Electromagnetic radiation

Back 13

Electromagnetic waves and, especially, the associated electromagnetic energy.