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8th Universe&Stars

8th grade Universe & Stars Review

TermDefinition
Expanding The Big Bang theory tells us that the universe has been and still is __________
Nebula A large cloud of dust and gas that becomes a star
Nuclear Fusion The way stars produce energy
Milky Way The galaxy in which our solar system exists
Andromeda What is the closest spiral galaxy to our galaxy
Temperature A physical property that is part of the basis for the HR Diagram
Spiral The Milky Way galaxy is this type of galaxy
Event Horizon The edge of a black hole
Constellations Patterns of stars in the sky
Redshift Evidence that the universe is expanding
Main Sequence Our sun is this type of star
Clouds of Magellan Two irregular galaxies that orbit our galaxy
Electromagnetic _______ waves can move through the vacuum of space
Light years Extremely large distances in space
Universe Something that is approximately 12 to 14 billion years old
Yellow The color of a medium temperature star
Red Giant A star that has used up all of its hydrogen becomes larger and cooler
Gamma rays The highest energy waves that come from stars
Luminosity Another expression that means brightness
Irregular The type of galaxy that is the smallest
Distance What is measured by light-years
Parallax Changing star location by earth's movement which allows us to calculate how far away they are
cool The temperature of orange and red colored stars
Galaxy A large group of stars held together by gravity
Black Hole One possible result after a star goes supernova
White Dwarf After a Red Giant star collapses slowly the very hot tiny dense star that remains
Steady state Theory Theory that the universe was and always has been as it is now
Super nova Giant stars that collapse quickly and explode out
Red Color with the longest wavelength
Blue Shift The change in light that is getting closer
Created by: coach_fletcher
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