Chapter 15 Astronomy Final Proj

Front

What is luminosity?

Back

Actual amount of light produced by a star.

Front

Is this the formula for Inverse Square Law for Light L/(4pi)(d^2)?

Back

True

Front

Closer stars have larger parallax.

Back

True

Front

What is the purpose of measuring parallax?

Back

To find the distance to stars.

Front

What kind of philosopher created the magnitude system?

Back

Greek philosopher.

Front

What is the Inverse Square Law?

Back

A law stating that the intensity of light or other radiation from a point source is inversely proportional to the square of the distance from the source.

Front

What is parallax?

Back

The apparent shift in position of an object when viewed from different angles.

Front

How is distance to stars measured using parallax?

Back

By observing the angle of shift in position of a star against distant background stars over a period of time.

Front

What is the relationship between distance and parallax angle?

Back

The greater the distance to a star, the smaller the parallax angle.

Front

What is apparent magnitude?

Back

A measure of how bright a star appears from Earth.