Energy comes to us, through the vacuum of space, from the sun in the form of electromagnetic waves. All matter will radiate electromagnetic energy unless its temperature is at absolute zero.

Objective: To observe the spectrograms of several light sources.

Vocabulary:

Spectrum-

Vacuum-

Wavelength-

Frequency-

Diffraction Grating-

Procedure:

1. Use a spectroscope to observe the bright sky. Never look directly at the sun. In Box #1 draw a spectrogram of what you see. Carefully place the colors over the appropriate wavelength value.


2. Repeat the procedure for each light source made available by your teacher.