Which term describes Earth's tilt on its axis?

Which term describes Earth's tilt on its axis?

• A. Tilt
• B. Rotation
• C. Revolution
• D. Orbit

Answer: (A)

Tilt describes how far Earth’s axis is angled from a line perpendicular to its path around the Sun. That angle, about 23.5 degrees, is what makes the Sun appear higher or lower in the sky during the year and creates the seasonal changes. Rotation is Earth spinning on its axis once each day, giving us day and night. Revolution (or orbit) is Earth’s yearly trip around the Sun. So the word that captures Earth’s tilt itself is tilt.

Tilt describes how far Earth’s axis is angled from a line perpendicular to its path around the Sun. That angle, about 23.5 degrees, is what makes the Sun appear higher or lower in the sky during the year and creates the seasonal changes. Rotation is Earth spinning on its axis once each day, giving us day and night. Revolution (or orbit) is Earth’s yearly trip around the Sun. So the word that captures Earth’s tilt itself is tilt.