Earth & Space Exam Review FALL

Front

What is an emission spectrum?

Back

An emission spectrum is a spectrum of the electromagnetic radiation emitted by a source, showing bright lines at specific wavelengths corresponding to the energy levels of electrons in atoms.

Front

What is luminosity in the context of stars?

Back

Luminosity is the total amount of energy emitted by a star per unit time, often measured in watts. It indicates the brightness of a star.

Front

How do you determine which star has the highest frequency?

Back

The frequency of a star's light can be determined by its color; blue stars have higher frequencies than red stars.

Front

What elements do high mass stars produce before they die?

Back

High mass stars produce elements up to iron before they die, through nuclear fusion in their cores.

Front

What type of star ends as a white dwarf?

Back

A low mass star ends its life cycle as a white dwarf after exhausting its nuclear fuel.

Front

What is a continuous spectrum?

Back

A continuous spectrum is a spectrum that shows all the colors of light without any gaps, produced by a solid, liquid, or densely packed gas.

Front

What is an absorption spectrum?

Back

An absorption spectrum is a spectrum that shows dark lines or bands, indicating the wavelengths of light absorbed by a substance.

Front

What is the relationship between frequency and wavelength?

Back

Frequency and wavelength are inversely related; as the frequency increases, the wavelength decreases, and vice versa.

Front

What is the significance of the Hertzsprung-Russell diagram?

Back

The Hertzsprung-Russell diagram is a scatter plot of stars showing the relationship between their absolute magnitudes or luminosities versus their stellar classifications or effective temperatures.

Front

What is a supernova?

Back

A supernova is a powerful and luminous explosion that occurs at the end of a star's life cycle, often resulting in the formation of neutron stars or black holes.