Astronomy Unit 1 Vocab Review

Day

• The period of time it takes for a star to rotate on its axis

• The period of time it takes for a planet to rotate on its axis

• The period of time it takes for a planet to complete its orbit

• The period of time it takes for a star to complete its orbit

Month

• The period of time it takes for a moon to rotate on its axis

• The period of time it takes for a moon to orbit its planet

• The period of time it takes for a planet to complete its moon

• The period of time it takes for a moon to complete its rotation

Year

• The period of time it takes for a moon to rotate on its axis

• The period of time it takes for a star to orbit its planet

• The period of time it takes for a planet to complete its orbit

• The period of time it takes for a planet to complete its rotation

This event happens twice a year and marks the beginning of the shortening or lengthening of days.

• Parallax

• Equinox

• Summer

• Solstice

This event happens twice a year and marks the beginning of the time when days and nights are exactly equal in length.

• Parallax

• Equinox

• Summer

• Solstice

An object that uses parts of a circle to measure the angle of stars

• Protractor

• Star Chart

• Mural

• Quadrant

A curved shape that is bulging out

• Concave

• Convex

• Congruent

• Controversial

A curved shape that is bulging in

• Concave

• Convex

• Congruent

• Controversial

The process by which light is bent.

• Refracting

• Reflecting

• Telescoping

• Prismatic Alignment

The process by which light is bounced.

• Refracting

• Reflecting

• Telescoping

• Prismatic Alignment