8.8A-B Components of the Universe
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Universe | all space and the matter space contains
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| Star | a self-luminous celestial body consisting of a mass of gas help together by its own gravity in which the energy is generated by nuclear reactions in its interior
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| Hertzsprung-Russell Diagram | a plot of the surface temperature (color) or stars vs. their luminosity (brightness)
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| Luminosity | the intensity if light from a celestial body that can be used to identify the body's characteristics
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| Main Sequence | stable stars in the middle development phases that ploy along a continuous diagonal belt on the H-R Diagram
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| Nebula | large cloud of gas and dust in interstellar space; the location of star formation
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| Supernova | the death of a large star by explosion
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| Black Hole | the remains of a star or other large object that collapsed under its owe gravity to form a super dense object with gravity so strong light cannot escape irs pull
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| Galaxy | a large grouping of stars in space
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| Elliptical Galaxy | a galaxy with a ling oval shape, a bright center, no apparent internal structure or spiral arms, and very little dust or gas
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| Spiral Galaxy | a galaxy with a bulge in the center and very distinct long arms winding around the center
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| Lenticular Galaxy | galaxy with a central bulge or bar with short arms, if any present
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| Irregular Galaxy | a galaxy with very little symmetry that does not fit into any category
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| SUn | the luminous star, composed mainly of hydrogen and helium, around which other planets and Earth revolve
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| Milky Way Galaxy | the galaxy in which the Sun and Earth are located
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| Spiral Arms | streaming arcs of millions of stars swirling around the center of a spiral galaxy such as the Milky Way
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| Galactic Center | rotation center of a galaxy
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| Dust Lanes | bands of dust that appear as darks ribbons against the bright star in a galaxy
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| Solar Mass | used in astronomy as a standard unit to compare the size of other stars with our Sun
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| Speed of Light | how fast light travels (i.e. 300,00 km/s)
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| Scale Model | a representation of an object that is accurate in its proportions to the actual object
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Or sort by any of the columns using the down arrow next to any column heading.
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Created by:
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