Question

what do you call a device that separates light into wavelengths *
1 point
○ spectrometer
○ spectrograph
○ wavelength analyzer
● spectroscope

a stars apparent magnitude is *
1 point
○ how luminous a star actually is
● the amount of light received from a star on earth
○ measured with the hubble telescope
○ how hot a star actually is

Explanation:

First Question:

A spectroscope is a device used to separate light into its constituent wavelengths (a spectrum) for visual observation. A spectrometer measures properties of light, a spectrograph records the spectrum, and "wavelength analyzer" is not the standard term.

Apparent magnitude of a star is a measure of the brightness of the star as seen from Earth (the amount of light received on Earth). Absolute magnitude is how luminous a star actually is; it's not measured only with Hubble, and it's not related to the star's temperature.

Answer:

D. spectroscope

Second Question: