Earth Science Unit 1 Vocab Flashcard

Front

Quasar

Back

A massive and remote object that emits large amounts of energy.

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Galaxy

Back

A system of stars, gas, and dust held together by gravitational attraction.

Front

Pulsar

Back

A rapidly rotating neutron star that emits regular pulses of radio waves.

Front

Main sequence

Back

A series of star types that most stars belong to, represented on the H-R diagram.

Front

Parallax

Back

The apparent shift in an object when viewed from different positions.

Front

Neutron star

Back

A dense stellar remnant composed mostly of neutrons, formed after a supernova.

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Black hole

Back

A region of space where the gravitational pull is so strong that nothing, not even light, can escape from it.

Front

Light-year

Back

The distance that light travels in one year, used to measure astronomical distances.

Front

Absolute magnitude

Back

The measure of the intrinsic brightness of a celestial object, regardless of its distance from Earth.

Front

Constellation

Back

A group of stars that form a recognizable pattern in the night sky.