8th Grade Science: Unit 05 Flashcards

Front

The measure of brightness of a star’s light as it leaves the star is called ________.

Back

absolute magnitude

Front

A system of stars and associated matter held together by gravitational attraction is called a ________.

Back

galaxy

Front

A diagram that shows the relationship between the brightness, surface temperature, and color of stars is called a ________.

Back

Hertzsprung-Russell diagram

Front

The galaxy which contains our Sun and its solar system, including Earth, is called the ________.

Back

Milky Way galaxy

Front

Fill in the blank: Clouds of dust and gas in space are called ________.

Back

nebulae

Front

A luminous globe of gas which produces its own heat and light by nuclear reaction made of mostly hydrogen and helium gas is called a ________.

Back

star

Front

A scientific theory concerning the early development and shape of the universe from a dense state, which began and is still expanding, is called the ________.

Back

Big Bang theory

Front

A theoretical stellar remnant that forms when a white dwarf has cooled and no longer emits significant heat or light is called a ________.

Back

black dwarf

Front

A region in space where gravity is so strong that even light cannot escape is called a ________.

Back

black hole

Front

A large, hot, and luminous star with a high surface temperature that appears blue in color and is in a late stage of stellar evolution is called a ________.

Back

blue-giant