Chapter 7 Vocabulary Review

An instrument that spreads light into different wavelengths.

• Spectroscope

• AU

• Light Year

• Apparent Magnitude

The average distance from Earth to the Sun- about 150,000,000 km.

• Astronomical Unit

• Light Year

• Luminosity

• Radiative Zone

The distance light travels in one year.

• Light Year

• Astronomical Unit

• Spectroscope

• Convection Zone

A measure of how bright an object appears from Earth.

• Apparent Magnitude

• Luminosity

• Nuclear Fusion

• Hertzsprung-Russell Diagram

The true brightness of an object.

• Luminosity

• Apparent Magnitude

• Nuclear Fusion

• Herztsprung-Russell Diagram

A process that occurs when the nuclei of several atoms combine into one larger nucleus.

• Nuclear Fusion

• Convection

• Dark Matter

• Spectroscope

A large sphere of hydrogen gas, held together by gravity, that is hot enough for nuclear reactions to occur in its core.

• Star

• Black Hole

• Nebula

• Supernova

A shell of cooler hydrogen above a star's core.

• Radiative Zone

• Convection Zone

• Black Hole

• Corona

Layer of a star where hot gas moves up toward the surface and cooler gas moves deeper into the interior.

• Convection Zone

• Radiative Zone

• Corona

• Supernova

The apparent surface of a star.

• Photosphere

• Chromosphere

• Corona

• Radiative Zone