Seasons

The slant of Earth's axis, which is 23.5 degrees from vertical compared to Earth's orbital plane around the Sun; results in the North Pole always pointing toward the North Star.

• Hemisphere

• Orbit

• Season

• Tilt

A curved path followed by a satellite as it revolves around an object.

• Rotation

• Orbit

• Temperature

• Equinox

The four natural divisions of the year based on changes in temperature due to varying amounts of sunlight received caused by the tilt of Earth during its revolution.

• Axis

• Tilt

• Seasons

• Equinox

Half of a sphere; Earth and the celestial sphere can be divided into northern and southern or eastern and western hemispheres.

• Equator

• Poles

• Rotation

• Hemisphere

The motion of a spinning object.

• Revolution

• Rotation

• Orbit

• Equator

An imaginery line about which each planet or moon spins.

• Equator

• Poles

• Axis

• Hemisphere

The motion of one object as it moves around another object.

• Rotation

• Orbit

• Tilt

• Revolution

When Earth is positioned so that neither the northern hemisphere nor the southern hemisphere is tilted toward or away from the Sun.

• Equator

• Equinox

• Axis

• Season

It is never tilted away from the Sun and receives direct rays of sunlight year-round.

• Equinox

• Hemisphere

• Equator

• Seasons

The points where the axis the Earth rotates around meets the surface.

• Poles

• Hemisphere

• Tilt

• Orbit