S:All living thing and non-living thing live in the universe.
Telescope:A device that collects light and makes distant objects appear closer and larger.
S:A telescope is a tool that astronomers use to waatch the sky.
Refraction:The bending of waves as they go from one substance to another.
S:Refraction occurs in eyeglasses and some telescopes.
Reflection:The bouncing of waves off a surface.
S:Reflection occurs in mirrors and some telescopes.
Wavelenght:The distance from one peak to the next on a wave.
S:Wavelenght is measure in meters.
Frequency:The number of waves that pass through a point in a second.
S:Frequency is measure in hertz.
Electromagnetic Spectrum:Waves of light in order by wavelenght.
S:Examples of E.S are:Radio Waves,micro waves and gamma rays.
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