Universe Vocab

Front

The ___________ is the theory that the universe originated in a huge explosion releasing all matter and energy.

Back

Big Bang

Front

A lightyear measures:

Back

Distance

Front

Nuclear reaction where nuclei combine to form heavier nuclei and release energy.

Back

Nuclear fusion

Front

A ________ occurs when light's wavelength changes due to an object moving away.

Back

redshift

Front

A __________ occurs when light's wavelength changes as an object moves towards an observer.

Back

blueshift

Front

A small, hot, dim star leftover from an old star

Back

White dwarf

Front

Light cannot escape from this region in space:

Back

Black hole

Front

Gamma rays, visible light, and radio waves are part of the:

Back

Electromagnetic spectrum

Front

The _______ _________ includes the sun and all planets and bodies that travel around it.

Back

Solar system

Front

A band of colors is known as a

Back

Spectrum