The difference in heat distribution between the poles and the equator is due to Earth's spherical shape and its axial tilt. Because of the spherical shape, the Sun's rays hit the Earth's surface at different angles at different latitudes. At the equator, the Sun is directly overhead, resulting in intense heat and sunlight. At the poles, however, the Sun's rays are spread out over a larger surface area, resulting in cooler temperatures. Earth's axial tilt also causes the seasons, further affecting heat distribution.
