How does spectroscopy provide evidence for the Big Bang theory?(1 point)
Responses
The intensities of peaks show that galaxies are moving away from each other.
The intensities of peaks show that galaxies are moving away from each other.
The intensities of peaks show that galaxies are moving toward each other.
The intensities of peaks show that galaxies are moving toward each other.
The red shift shows that galaxies are moving toward each other.
The red shift shows that galaxies are moving toward each other.
The red shift shows that galaxies are moving away from each other.
The first and last options are correct:
1. The intensities of peaks show that galaxies are moving away from each other.
- Spectroscopy allows astronomers to analyze the light emitted by galaxies. By observing the spectrum of light, they can measure the shift in wavelength, known as the redshift. The redshift indicates that the light is being stretched, indicating that galaxies are moving away from each other, supporting the expansion of the universe and the Big Bang theory.
4. The redshift shows that galaxies are moving away from each other.
- As mentioned earlier, the redshift observed in spectroscopy reveals that the light from galaxies is being stretched, indicating that they are moving away from each other. This observation aligns with the theory of an expanding universe and supports the Big Bang theory.
The correct response is:
- The intensities of peaks show that galaxies are moving away from each other.
During spectroscopy, scientists analyze the light emitted or absorbed by celestial objects. In the case of the Big Bang theory, spectroscopy helps provide evidence by showing a phenomenon called redshift. Redshift refers to the stretching of light waves towards the longer-wavelength end of the electromagnetic spectrum. This occurs when an object is moving away from the observer. In the context of galaxies, spectroscopy shows that the intensities of peaks in their spectra are shifted towards longer wavelengths, indicating that galaxies are moving away from each other. This observation supports the idea that the universe is expanding, as predicted by the Big Bang theory.