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The Origin of Everything
Terms in this set (20)
a prefix meaning one thousand million
a prefix meaning one million
the distance between two corresponding parts of a wave measured in metres (m)
the number of complete cycles of a wave measured in hertz (Hz)
includes all forms of electromagnetic radiation; the types of radiation differ in their frequencies and wavelengths
tiny part of electromagnetic spectrum to which our eyes are sensitive
the speed of light
the process in which white light separates into colors
produced when visible light passes through a gas and the gas absorbs specific wavelengths of light
a unit of distance that is equal to 3.26 light years
distance light travels in one year.
a particular class of variable stars which are used to estimate stellar distances because of the correlation between their periodicity and distance.
a collection of stars, dust, and gas bound together by gravity
a shift toward longer wavelengths of the spectral lines emitted by a star or galaxy that is moving away from us
an observed change in the wavelength and frequency of a wave when the source is moving
an object in space whose gravity is so strong not even light can escape.
Big Bang Theory
theory that the universe began from one point 13.8 billion years ago and has been expanding ever since
Cosmic Background Radiation
the electromagnetic radiation left over from the big bang
Cosmic Background Explorer satellite
Wilkinson Microwave Anisotropy Probe: satellite that produced a map of microwave background radiation from big bang. Mainly shows density of different areas of universe at its birth.
THIS SET IS OFTEN IN FOLDERS WITH...
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