SEM Part 1 Vocab Flashcard Review

Front

Rotation

Back

the action of spinning or rotating on an axis

Front

Revolution

Back

an instance of revolving around a central body

Front

Sun

Back

: a celestial body around which planets revolve

Front

Earth

Back

The planet we live on; 3rd from the Sun.

Front

Day

Back

Time for a celestial body to complete a full rotation on its axis.

Front

Leap Year

Back

A day added to February, resulting in a 366-day year.

Front

Collision Ring Theory

Back

Theory of moon creation

Front

Year

Back

Time a celestial body revolves around the Sun.

Front

Month: A measure of time nearly equal to the moon's revolution, about 4 weeks or 30 days, or ¹/₁₂ of a year.

Back

A measure of time corresponding nearly to the period of the moon's revolution and amounting to approximately 4 weeks or 30 days or ¹/₁₂ of a year.

Front

moon

Back

a natural satellite that orbits the Earth