HISET Social Studies Practice

Which term describes areas on Earth that are divided based on longitude?

1. Regions

2. Meridians

3. Time Zones

4. Hemispheres

The correct answer is: Time Zones

The term that describes areas on Earth divided based on longitude is time zones. Time zones are regions that have the same standard time, which is determined by the Earth's rotation and the position of the sun in relation to longitude lines. Each time zone generally spans 15 degrees of longitude, reflecting one hour's difference in solar time. As the Earth rotates, different areas experience daylight and darkness at different times, necessitating the division into time zones for coordinating activities and schedules globally. This system allows for uniform timekeeping across vast distances, despite the Earth’s spherical shape. The other terms listed have distinct meanings: meridians refer specifically to the longitudinal lines themselves, while regions are broad areas defined by cultural, physical, or political factors. Hemispheres denote the halves of the Earth divided by the equator and prime meridian, which involves both latitude and longitude, rather than specifically addressing the aspect of time.