Vocabulary N°5

Universe: Everything that exists.


 

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  My mom told me that the universe includes the galaxies, the planets and the stars.



Telescope: A device that collects light and makes distant objects appear closer and larger.

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  Galileo use a telescope to study the Milky Way Galaxy.

Refraction: The bending of waves as they go from one substance to another.

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  The teacher told us that an example of refraction is a vase or a window.

Reflection: The bouncing of waves off a surface.

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  A example of reflection can be the mirror.

Wavelenght: The distance from one peak to the next on a wave.
                                     

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  The stereos have wavelenght.

Frequency: The number of waves that pass through a point in a second.
                                             

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  I think that the wavelenght has many frequency.

Electromagnetic Spectrum: Waves of light in order by wavelenght.
                                     

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  I have a list of the Electromagnetic Spectrum.