Core Concepts 2 & 3 Vocab.

Front

Path an object takes around another

Back

Orbit

Front

Complete journey around the sun

Back

revolution

Front

Imaginary line between North and South Poles, tilted to its orbit.

Back

axis

Front

Point where days and nights are nearly equal on Earth

Back

equinox

Front

Point where days are longest in one hemisphere and shortest in the other.

Back

solstice

Front

Complete turn; Earth takes 24 hrs for this.

Back

Rotation

Front

Areas sharing the same time; 24 of these.

Back

Time zones

Front

Sphere of very hot metal at Earth's center

Back

core

Front

Thick, rocky layer around the core

Back

mantle

Front

Thin layer of rocks and minerals surrounding the mantle

Back

crust