vocabulary 4 Tools of Astronomers

Universe :  everything that exsist.

Telescope :   a device that collects light  and makes distace objects appers closer and larger.

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

Reflection:  the bouncing of waves off a surface.

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

Frecuency: the number of waves that pass throught a point in a second.

Electromacnetic Spectrum: waves of light in order of wave lenght.