☀️ Why Polar Seasons Are So Extreme

What you’ll learn

1. The Tilted EarthUnderstand that Earth's axial tilt, as it orbits the Sun, causes the seasons.Earth leans to one side at the same angle all year, a lean called the axial tilt. As Earth orbits the Sun, whichever pole leans toward the Sun has summer, and the pole leaning away has winter. It is this tilt, not the distance to the Sun, that gives us the seasons.
2. Endless Day, Endless NightExplain the midnight Sun and the polar night as results of the extreme polar tilt.Because the poles lean so strongly toward or away from the Sun, their seasons are extreme. In polar summer the Sun never sets, giving the midnight Sun, while in polar winter the Sun does not rise for weeks, giving the dark polar night, often lit by auroras.
3. Why the Poles Stay ColdExplain why the poles stay cold, using the low Sun angle and reflective white ice.The poles stay cold because the Sun always sits low, so its slanted light is weak and spread thin. Bright white snow and ice reflect most of that sunlight back into the sky instead of absorbing it, and in winter the Sun does not rise at all. Together these keep the poles freezing.

Questions this course answers

Grounded in trusted sources

• NASA
• NOAA
• Britannica Kids

Every Wunder lesson is built from real, reputable sources — never invented.

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