Science Vocabulary 9/18

Front

rotation

Back

a spinning motion

Front

rotation axis

Back

the line on which an object rotates

Front

orbit

Back

the path an object follows as it moves around another object

Front

revolution

Back

the motion of one object around another

Front

gravitational pull

Back

invisible force that pulls everything towards each other

Front

seasons

Back

four yearly divisions (spring, summer, autumn, and winter) based on Earth’s changing position to the sun.

Front

solar eclipse

Back

when the moon’s shadow appears on Earth’s surface

Front

lunar eclipse

Back

when the moon moves into the Earth’s shadow

Front

solstice

Back

a day when Earth’s rotation axis is the most toward or away from the sun

Front

equinox

Back

a day when Earth’s rotation axis is leaning along Earth’s orbit, neither toward nor away from the sun.