Formation of the Universe Vocabulary

Front

Theory which explains that the universe began as a point and has been expanding ever since.

Back

Big Bang Theory

Front

All types of electromagnetic radiation, arranged according to wavelength and frequency.

Back

Electromagnetic Spectrum

Front

The distance between two peaks in a wave.

Back

Wavelength

Front

Different colors of light emitted based on the chemical composition of the light source

Back

Spectra

Front

The left over radiation from the big bang explosion found throughout the universe.

Back

Cosmic Background Radiation

Front

A shift in the lines of an object's spectrum toward the red end indicating that an object is moving away from the observer.

Back

Redshift

Front

Electromagnetic waves that are visible to the human eye

Back

Visible Light

Front

The effect observed when the frequency of a wave changes due to the relative motion between the source and the observer.

Back

Doppler Effect

Front

a collection of billions of stars and various amounts of gas and dust held together by gravity

Back

galaxy

Front

the spiral-shaped galaxy that Earth and our solar system are part of, which contains of 200 billion stars

Back

Milky Way Galaxy