What is the primary factor in global climate variation?

What is the primary factor in global climate variation?

• A. Latitude.
• B. Longitude.
• C. Elevation.
• D. Ocean currents.

Answer: (A)

Latitude controls the angle at which sunlight hits the Earth, setting how much solar energy each area receives over the year. Near the equator, sunlight is direct year-round, producing warm temperatures and little seasonal change. As you move toward higher latitudes, sunlight arrives more obliquely, cooling average temperatures and increasing seasonal variation. This latitudinal pattern creates the broad global climate zones and explains most of the variation we see from place to place. Other factors like elevation and ocean currents can modify local conditions, but they operate within the latitudinal framework rather than drive the overall global climate differences. Longitudinal position influences local time and weather patterns more than it does the big-picture climate.

Latitude controls the angle at which sunlight hits the Earth, setting how much solar energy each area receives over the year. Near the equator, sunlight is direct year-round, producing warm temperatures and little seasonal change. As you move toward higher latitudes, sunlight arrives more obliquely, cooling average temperatures and increasing seasonal variation. This latitudinal pattern creates the broad global climate zones and explains most of the variation we see from place to place. Other factors like elevation and ocean currents can modify local conditions, but they operate within the latitudinal framework rather than drive the overall global climate differences. Longitudinal position influences local time and weather patterns more than it does the big-picture climate.