Ch. 2 Study Game: Stars, Galaxies, & the Universe

Front

What unit would astronomers use to measure distances OUTSIDE of our Solar System?

Back

Light-years are the unit used by astronomers to measure vast distances in space, particularly outside our Solar System.

Front

What is the term for the change in frequency or wavelength of light from a star or galaxy due to its motion?

Back

Doppler Shift refers to the change in frequency or wavelength of light from an object in motion, indicating whether it is moving towards or away from us.

Front

What theory explains that the universe began from a singular point and is continuously expanding?

Back

The Big Bang Theory is the scientific explanation that the universe originated from a single point and has been expanding ever since.

Front

What type of galaxy has a spiral shape with arms extending from a central bulge?

Back

A Spiral Galaxy is characterized by its spiral structure, with arms that wind outward from the center.

Front

What type of galaxy is shaped like a sphere, football, or egg?

Back

An Elliptical Galaxy is shaped like a sphere or an elongated oval, lacking the distinct arms of spiral galaxies.

Front

What is the name of the galaxy that contains our Solar System?

Back

The Milky Way Galaxy is the galaxy that contains our Solar System.

Front

What is the term for the study of celestial objects, space, and the universe as a whole?

Back

Astronomy is the scientific study of celestial objects, space, and the universe.

Front

What is the name of the effect that causes the light from a star moving away from us to appear redder?

Back

Redshift is the phenomenon where light from an object moving away from an observer shifts to longer wavelengths, appearing redder.

Front

What is the name of the effect that causes the light from a star moving towards us to appear bluer?

Back

Blueshift is the phenomenon where light from an object moving towards an observer shifts to shorter wavelengths, appearing bluer.

Front

What is the term for a galaxy that does not have a distinct shape and is often chaotic in appearance?

Back

An Irregular Galaxy lacks a defined shape and often appears chaotic, with no clear structure.