The Formation of Galaxies Vocabulary Terms

A galaxy shaped like a round or flattened ball, generally containing only old stars

• elliptical galaxy

• spiral galaxy

• irregular galaxy

A theory which states that there was no beginning to the universe and that the universe does not change in appearance

• Big Bang Theory

• Steady State Theory

• Theory of Relativity

Tags

NGSS.HS-ESS1-2

A collection of stars, dust, and gas bound together by gravity

• nebulae

• galaxies

• solar system

Tags

NGSS.MS-ESS1-2

A galaxy that has an undefined shape, they have large number of young stars and great amount of gas and dust---

• spiral galaxy

• irregular galaxy

• elliptical galaxy

A form of matter that does not have a definite shape of volume

• gas

• solid

• liquid

The theory that the universe originated in a huge explosion that released all matter and energy

• Big Bang Theory

• Steady State Theory

• Theory of Relativity

Tags

NGSS.HS-ESS1-2

A galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern

• Elliptical Galaxy

• Spiral Galaxy

• Irregular Galaxy

300,000 km / s is the speed of

• Speed of light

• Speed of sound

• how fast the sun spins

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

• Red Shift

• Blue Shift

• Electromagnetic Spectrum

Tags

NGSS.HS-ESS1-2

A huge ball of gas that produces its own energy through nuclear reactions in its core, such as the sun is considered __________

• planets

• stars

• supernova

• galaxies