Seasons in 3D Vocab

Axis

An imaginary line around which an object rotates.

Equinox

One of the two days of the year when the length of day equals the length of night.

Latitude

A location’s distance north or south of the equator, measured in degrees.

Northern Hemisphere

The part of Earth located north of the equator.

Revolve

To move around another object, typically in an orbit.

Rotate

To spin around an axis.

Solar energy

The amount of energy from the Sun that a location receives in a day, measured in watts per square meter (W/m2).

Solar intensity

The amount of solar energy striking a location in a single hour.

Southern Hemisphere

The part of Earth located south of the equator.

Summer solstice

The longest day of the year, occurring around June 21 in the Northern Hemisphere and December 21 in the Southern Hemisphere.

Winter solstice

The shortest day of the year, occurring around December 21 in the Northern Hemisphere and June 21 in the Southern Hemisphere.