Vocabulary 5
Universe: everything that exist.
Telescope: a divice that collects light and m ake distance objects appear closer and larger.
Refraction: the bending of wavesas they go from one substances to another.
Reflection: the bouncing of waves off a surface
Wavelength: the distance from one peak to the next on a wave.
Frequency: the number of waves that pass through a point in a second.
Electromagnetic spectrum: waves of light in order by wavelength.
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