Star Spectra - Practice

Front

What are the two main elements that make up most of the sun?

Back

Helium and hydrogen.

Front

What do we primarily use emission/absorption spectra to identify in stars?

Back

Composition.

Front

What type of spectrum is characterized by dark lines on a continuous background?

Back

Absorption spectrum.

Front

What is the term for the spectrum that shows bright lines against a dark background?

Back

Emission spectrum.

Front

What is a continuous spectrum?

Back

A spectrum that contains all wavelengths of light without any gaps.

Front

What is a black body spectrum?

Back

The spectrum emitted by an idealized perfect black body that absorbs all incident radiation.

Front

Which element is indicated if a star's spectrum shows strong lines for strontium?

Back

Strontium.

Front

What is the significance of identifying the composition of stars?

Back

It helps us understand the star's formation, evolution, and the universe's chemical history.

Front

What does the temperature of a star affect in its spectrum?

Back

The color and the type of spectrum it produces.

Front

What is the relationship between a star's luminosity and its spectrum?

Back

Luminosity can affect the brightness of spectral lines, helping to determine the star's distance and size.