Question

select the correct answer.
what do scientists use to determine the temperature of a star?
a. thermometer
b. distance from earth
c. composition
d. color

Explanation:

Stars emit light across a range of wavelengths. The color of a star is related to its surface temperature. Hotter stars emit more blue - white light, while cooler stars emit more red light. A thermometer (A) is not practical for stars as they are extremely far away. The distance from Earth (B) does not directly determine temperature. Composition (C) affects other properties like spectral lines but not the direct determination of temperature in the way color does.

Answer:

D. color