Which one of the following descriptions explains why the graphs showing the intensities and wavelengths are different?

a. Blue stars are cooler than yellow stars; therefore, the blue star peaks at the shorter-wavelength portion of the spectrum and the yellow star at the longer-wavelength portion of the spectrum.

b. Blue stars are warmer than yellow stars; therefore, the blue star peaks at a longer-wavelength portion of the spectrum and the yellow star peaks at the shorter-wavelength portion of the spectrum.

c. Yellow stars are cooler than blue stars; therefore, the yellow star peaks at the longer-wavelength portion of the spectrum and the blue star peaks at the shorter-wavelength portion of the spectrum.

d. Yellow stars are cooler than blue stars; therefore, the yellow star peaks at the shorter-wavelength portion of the spectrum and the blue star peaks at the longer-wavelength portion of the spectrum.

Question

Biology

Eileen Cantu

19 April, 16:30

Which one of the following descriptions explains why the graphs showing the intensities and wavelengths are different?

a. Blue stars are cooler than yellow stars; therefore, the blue star peaks at the shorter-wavelength portion of the spectrum and the yellow star at the longer-wavelength portion of the spectrum.

b. Blue stars are warmer than yellow stars; therefore, the blue star peaks at a longer-wavelength portion of the spectrum and the yellow star peaks at the shorter-wavelength portion of the spectrum.

c. Yellow stars are cooler than blue stars; therefore, the yellow star peaks at the longer-wavelength portion of the spectrum and the blue star peaks at the shorter-wavelength portion of the spectrum.

d. Yellow stars are cooler than blue stars; therefore, the yellow star peaks at the shorter-wavelength portion of the spectrum and the blue star peaks at the longer-wavelength portion of the spectrum.

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Answers (1)

Know the Answer?

Chanel Drake · Answer 1

Option (C)

Explanation:

The color of the stars is very important as it is directly related to its surface temperature. The extremely hotter stars appear to be bluish in color and the less hotter stars appears to be reddish or yellowish in color. The temperature of hot bluish stars ranges from 10,000 K to 50,000 K. The sun's surface temperature is inversely proportional to the wavelength of lights. The blue stars are comprised of lights that peaks at shorter wavelengths and have extremely high temperatures. On the other hand, the yellow stars are comprised of lights that peaks at longer wavelengths and have a comparatively lower temperature.

Thus, the stars that are bluish in color are of high intensities compared to the yellow stars.

Hence, the correct answer is option (C).