Question

What is a star's emission spectrum?

It is the same as the HR diagram and gives the same information.

It is the fingerprint of all of the colors of light emitted by a star.

It is a graph of all the pollution given off by a star.

It is a graph of the star’s solar flares.

Answer 1

Please help! I figured out the other questions on my 25 Question test.

Answer 2

do you know whats the meaning of the word spectrum? .. and do you know what the all the options mean?

Answer 3

Pass sunlight through a triangular prism or bounce it off the finely grooved surface of a compact audio disk and see it break merrily into a band of pure sparkling color, its "spectrum," familiar in the colors of a rainbow, in light glittering from newly fallen snow, in the rings and haloes around a partly- clouded Sun and Moon, in the flash of a cut diamond, and in so many other facets of nature. The classic colors red, orange, yellow, green, blue, and violet connect in a seemingly infinite number of shades, one blending smoothly into the next. Together they constitute the "visual spectrum" (or "optical spectrum") because it is the part of the full spectrum that is seen with the human eye.

A flare is defined as a sudden, rapid, and intense variation in brightness. A solar flare occurs when magnetic energy that has built up in the solar atmosphere is suddenly released. Radiation is emitted across virtually the entire electromagnetic spectrum, from radio waves at the long wavelength end, through optical emission to x-rays and gamma rays at the short wavelength end. The amount of energy released is the equivalent of millions of 100-megaton hydrogen bombs exploding at the same time! The first solar flare recorded in astronomical literature was on September 1, 1859. Two scientists, Richard C. Carrington and Richard Hodgson, were independently observing sunspots at the time, when they viewed a large flare in white light.
Gor this question go to:

http://hesperia.gsfc.nasa.gov/sftheory/f …

Answer 4

hope this helps

Answer 5

Thanks a lot!