Term
|
Definition
| huge clouds of dust and gas from which new stars are born. |
|
|
Term
|
Definition
| spiral, elliptical, and irregular |
|
|
Term
| Many stars are found in... |
|
Definition
|
|
Term
| Every distant galaxy shows.... |
|
Definition
| a red shift, indicating that the universe is expanding |
|
|
Term
| Most astronomers agree that..... |
|
Definition
| the universe began with the big bang |
|
|
Term
| Stars range in sizes from.... |
|
Definition
| huge supergiants to neutron stars |
|
|
Term
| The surface temperature of a star can be determined by..... |
|
Definition
|
|
Term
| Most stars are primarily made up of...... |
|
Definition
| hydrogen, and heluim gasses |
|
|
Term
| A star's brightness as observed from Earth....... |
|
Definition
| is its apparent magnitude |
|
|
Term
| A star's true brightness is its .......... |
|
Definition
|
|
Term
| The Hertzsprung-Russel diagram shows............ |
|
Definition
| the relationship between a star's absolute magnitude and its temperature |
|
|
Term
| The layers of our sun are.............. |
|
Definition
| corona, chromosphere, photosphere, and core |
|
|
Term
| The main factor that affects the evolution of a star is...... |
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| star that suddenly increases in brightness in just a few hours or days |
|
|
Term
|
Definition
| massive cloud of dust and gas between the stars |
|
|
Term
|
Definition
|
|
Term
|
Definition
| galaxy that is shaped like a pinwheel |
|
|
Term
|
Definition
| galaxy that may vary is shape from spherical flat |
|
|
Term
|
Definition
| instrument that breaks up the light from a distant star into its characteristic colors |
|
|
Term
|
Definition
| band of colors formed when light passes through a prism |
|
|
Term
|
Definition
| shift toward the red end of the spectrum of a star that is moving away from the Earth |
|
|
Term
|
Definition
| apparent change in the wavelength of light that occurs when an object is moving toward or away from the Earth |
|
|
Term
|
Definition
| theory that states that the universe began to expand with the explosion of concentrated matter and energy and has been expanding ever since |
|
|
Term
|
Definition
| force of attraction between objects |
|
|
Term
|
Definition
| quasi-stellar radio source; distant object that gives off mainly radio waves and X-rays |
|
|
Term
|
Definition
| star with a diameter about 10 to 100 times as large as the sun |
|
|
Term
|
Definition
| star with a diameter up to 1000 times the diameter of the sun; largest of all stars |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| brightness of a star as it appears from Earth |
|
|
Term
|
Definition
| amount of light a star actually gives off |
|
|
Term
| Hertzsprung-Russell diagram- |
|
Definition
| chart that shows the realtionship between the absolute magnitude, and the surface temperature of stars; also called H-R diagram |
|
|
Term
|
Definition
| star that falls in an area from the upper right corner to the lower left corner |
|
|
Term
|
Definition
| apparent change in the position of a star in the sky due to the change in the Earth moves around the sun |
|
|
Term
|
Definition
| process by which hydrogen atoms are fused, or joined together, to form helium atoms |
|
|
Term
|
Definition
| outermost layer of the sun's atmosphere |
|
|
Term
|
Definition
| middle layer of the sun's atmosphere |
|
|
Term
|
Definition
| innermost layer of the sun's atmosphere |
|
|
Term
|
Definition
|
|
Term
|
Definition
| violent storms on the sun that can be seen from the Earth as huge bright arch or loop of hot gas |
|
|
Term
|
Definition
| storm on the sun sun that shows up as a bright bursts of light on the sun's surface |
|
|
Term
|
Definition
| continuous stream of high-energy particles released into space in all directions from the sun's corona |
|
|
Term
|
Definition
| dark area on the sun's suface |
|
|
Term
|
Definition
| imaginary vertical line through the line through the center of body around which the body rotates, or spins |
|
|
Term
|
Definition
|
|
Term
|
Definition
| tremendous explosion in which a star breaks apart, releasing energy and newly formed elements |
|
|
Term
|
Definition
| neutron star that give off radio waves |
|
|
Term
|
Definition
| core of a supermassive star that remains after a supernova; the gravity of the core is so strong that not even light can escape |
|
|
Term
| Light can be broken up into its characteristic colors by an...... |
|
Definition
|
|
Term
| The shape of galaxies such as the Milky Way is... |
|
Definition
|
|
Term
| The most common element in an average star is.... |
|
Definition
|
|
Term
| During nuclear fusion, hydrogen atoms are fused into.... |
|
Definition
|
|
Term
| The main factor that shapes the evolution of a star is... |
|
Definition
|
|
Term
| The color of a star is an indicator of its... |
|
Definition
|
|
Term
| Super-Massive stars end up as... |
|
Definition
|
|
Term
| The most distant objects in the universe are... |
|
Definition
|
|
Term
| TRUE OR FALSE: Our sun is in the Andromeda Galaxy |
|
Definition
|
|
Term
| TRUE OR FALSE: Most stars are main-sequence |
|
Definition
|
|
Term
| TRUE OR FALSE: A solar storm in the form of a huge, bright, loop is called a solar flare |
|
Definition
|
|
Term
| TRUE OR FALSE: Heavy elements are produced in a star during a nova explosion |
|
Definition
|
|
Term
| TRUE OR FALSE: Most of the core of a red giant is made of helium |
|
Definition
|
|
Term
| TRUE OR FALSE: In an open universe, all the galaxies will eventually move back to the center of the universe |
|
Definition
|
|
Term
| TRUE OR FALSE: The blue shift indicates that the universe is expanding |
|
Definition
|
|
