Spectra Review

Front

What does a spectrum represent?

Back

A range of colors or wavelengths of electromagnetic radiation

Front

What is the source of energy that excites an electron in an atom?

Back

Light

Front

What is emitted by electrons that corresponds to specific wavelengths of light?

Back

Light

Front

What causes the bright bands of light in the spectrum?

Back

Electrons de-exciting and emitting energy as light

Front

What did scientists discover about elements after over one hundred years of research?

Back

Each element has its own unique spectral lines.

Front

What happens when electrons de-excite?

Back

They emit light at specific wavelengths.

Front

What do hot objects, like the core of a star, emit?

Back

A continuous spectrum of light

Front

Which spectral lines are easiest to observe?

Back

Visible

Front

What is determined if the spectral lines correspond to multiple elements?

Back

The substance is a compound of several known elements.

Front

What is the Doppler effect?

Back

The observed change in frequency of sound or light because of the relative motion of a wave source and the observer.