Astronomy Ch 4 Vocab!

Front

Group of stars forming a recognizable pattern in the sky.

Back

Constellation

Front

Measure of light emitted by a star.

Back

Absolute Magnitude

Front

Measure of light from a star received on Earth.

Back

Apparent Magnitude

Front

Unit for distance light travels in a year, used for star and galaxy distances.

Back

Light-Year

Front

Lowest layer of the Sun’s atmosphere; emits light at ~6,000 K.

Back

Photosphere

Front

Layer of the Sun’s atmosphere above the photosphere.

Back

Chromosphere

Front

Outermost, largest layer of the Sun’s atmosphere; extends millions of km into space, temperatures up to 2 million.

Back

Corona

Front

Cooler, less bright areas on the Sun's surface caused by its magnetic field, occurring in cycles.

Back

Sunspots

Front

Large gas and dust cloud that contracts under gravity, breaking into pieces that may form stars.

Back

Nebula

Front

Late stage of low-mass main sequence star: hydrogen core depleted, core contracts, temp rises, outer layers expand and cool.

Back

Red Giant