Final answer:
During sunrise and sunset, the Sun is low in the sky, resulting in softer light and longer shadows. This is due to the Sun's light passing through more of the Earth's atmosphere and the scattering of light by the atmosphere.
Step-by-step explanation:
When the Sun is low in the sky during sunrise and sunset, there is a softer light and longer shadows. This is because the Sun's light has to pass through more of the Earth's atmosphere to reach us. The atmosphere scatters light, and blue light scatters more easily than red light, which is why the Sun appears more red at sunrise and sunset. Additionally, when the Sun is near the horizon, its light is spread out over a greater distance, resulting in longer shadows.