Shared Flashcard Set

Details

Seasons 1
review
15
Science
7th Grade
07/30/2006

Additional Science Flashcards

 


 

Cards

Term
Revolution
Definition
"The motion of Earth around the Sun, which takes about 365 1/4 days, or one year, to complete"
Term
Rotation
Definition
"Spinning of Earth on its axis, which causes day and night; it takes 24 hours for Earth to complete one rotation."
Term
Orbit
Definition
Curved path followed by Earth as it moves around the Sun
Term
Axis
Definition
"Imaginary line around which Earth spins, causing day and night, and that is drawn from the north geographic pole through Earth to the south geographic pole"
Term
Equinox
Definition
Twice-yearly time when the Sun is directly above Earth's equator and the length of day equals the length of night worldwide
Term
Solstice
Definition
"Time when the Sun reaches its greatest distance north or south of the equator, which occurs June 21 or 22 for the northern hemisphere (longest day of the year) and December 21 or 22 for the southern hemisphere (shortest day of the year)"
Term
Summer solstice
Definition
"Approximately June 22 in the Northern Hemisphere when the sun is highest in the sky and directly overhead at latitude 23.5º N, the Tropic of Cancer"
Term
Winter solstice
Definition
"Approximately December 22 in the Northern Hemisphere when the sun is lowest in the sky and directly overhead at latitude 23.5ºS, the Tropic of Capricorn"
Term
Vernal equinox
Definition
"The sun is on the equator moving north, and marks the beginning of spring"
Term
Autumnal equinox
Definition
"The sun is on the equator moving south, and marks the beginning of fall"
Term
Direct energy
Definition
Direct rays of the Sun
Term
Indirect energy
Definition
Indirect or slanted rays of the Sun
Term
Longest day of the year
Definition
Summer solstice
Term
Shortest day of the year
Definition
Winter solstice
Term
Earth's tilt
Definition
23.5 degrees
Supporting users have an ad free experience!