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8th SMS Astronomy 3

Chapter 3 Section 1, 2, 3 VOCAB (Astronomy)

Constellation Pattern of stars
Visible Light (3-1) Electromagnetic radiation seen by the unaided eye
Electromagnetic Radiation (3-1) Energy traveling through space in the form of waves
Wavelength (3-1) Distance between the crests of two waves
Spectrum (3-1) Range of wavelengths of electromagnetic waves
Refracting Telescope (3-1) Telescope that uses convex lenses to gather and focus light
Convex Lens (3-1) Piece of transparent glass that's curved, making the middle thicker than the edges
Reflecting Telescope (3-1) Telescope with one or more mirrors that gather light
Radio Telescope (3-1) Device used to detect radio waves from objects in space
Observatory (3-1) Building that contains one or more telescopes
Spectrograph (3-1) Instrument that separates light into colors and photographs the resulting spectrum
Galaxy (3-2) Giant structure that contains hundreds of billions of stars (ours is called the "Milky Way")
Universe (3-2) All of space and everything in it
Light-Year (3-2) Distance that light travels in one year
Parralax (3-2) Apparent change of an object's position when seen from different place
Giant Star (3-2) A very large star, much larger than the sun
Apparent Magnitude (3-2) Brightness of a star "as seen fron Earth"
Absolute Magnitude (3-2) Brightness of a star "if it were a standard distance from Earth"
Hertzsprung-Russell Diagram (3-2) A graph relating the temperature and brightness of stars
Main Sequence (3-2) Area on the Hertzprung-Russell diagram from upper left to lower right that includes more than 90 percent of all stars
Pulsar (3-3) Neutron star that pruduces radio waves
Nebular (3-3) Large amount of gas and dust in space, spread out in an immense volume
Protostar (3-3) Contracting cloud of gas and dust; "the earliest stage of a star's life"
White Dwarf (3-3) The remaining hot core of a star after its outer layers have expanded and drifted out into space
Supernova (3-3) The explosion of a dying giant or supergiant star
Neutron Star (3-3) A tiny star that remains after a supernova explosion
Black Hole (3-3) The remains of an extremely massive star pulled into a small volume by the force of gravity
Quasar (3-3) distant galaxy with a black hole at its center
Binary Star (3-4) Star system that contains two stars
Eclipsing Binary (3-4) Star system where one star periodically blocks the light from another star
Spiral Galaxy (3-4) Galaxy with arms curve outward in a pinwheel pattern
Elliptical Galaxy (3-4) Galaxy shaped like a flattened ball, containing only old stars
Irregular Galaxy (3-4) Galaxy that does not have a regular shape
Created by: SimardRR