Fill in the blanks in the statements about parallax. As the distance to an object decreases, the observed parallax . A parsec is defined as the distance to an object when the is equal to one arcsecond. When the parallax is 0.1 arcseconds , the distance is .

increases, angle, 10 parsec

Explanation:

d=1/p

d: distance in parsec

p: parallax in arcseconds

One parse is defined as distance at which angle subtended by an astronomical body from earth's equator is one arcsceond.

As the distance to an object decreases, the observed parallax _Increases_ . A parsec is defined as the distance to an object when the _Angle_ is equal to one arcsecond. When the parallax is 0.1 arcseconds , the distance is _10 parsecs_.

Explanation:

A Parallax in astronomy is the apparent displacement of an object because of a change in the observer's point of view. This is use to measure distances to nearby stars. As the distance to a star increases, the its parallax decreases and vice-versa.

Parallax formula can be express as:

d=1/p

Where:

p = parallax angle in arcseconds

d = distance in Parsecs

Parallax Second = Parsec (pc)

A star with a parallax of 1 arcsecond has a distance of 1 Parsec.

Given:

p = 0.1 arcseconds

from:

d=1/p

d=1/0.1 arcseconds

d=10 parsecs