Earth & Space Exam Review FALL

Front

What is the process of solar system formation?

Back

The solar system formed from a spinning nebula where gases accreted to form the sun and dust formed rocky planets.

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, typically observed in stars.

Front

What does luminosity refer to in astronomy?

Back

Luminosity refers to the total amount of energy emitted by a star per unit time, often compared to other stars.

Front

What is Kepler's Law of Harmonies?

Back

Kepler's Law of Harmonies states that the square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit.

Front

Why is Betelgeuse more luminous than Procyon?

Back

Betelgeuse is more massive than Procyon, which contributes to its greater luminosity.

Front

What is the role of fusion in stars?

Back

Fusion in stars is the process where hydrogen atoms combine to form helium, releasing energy that powers the star.

Front

What is a continuous spectrum?

Back

A continuous spectrum is a spectrum that shows a complete range of colors without any gaps, produced by hot, dense objects.

Front

What is the significance of mass in determining a star's luminosity?

Back

A star's mass is directly related to its luminosity; more massive stars tend to be more luminous.

Front

What is the difference between emission and absorption spectra?

Back

Emission spectra show bright lines on a dark background, while absorption spectra show dark lines on a continuous spectrum.

Front

What is the nebular hypothesis?

Back

The nebular hypothesis is a model that explains the formation of the solar system from a cloud of gas and dust.