1. Sunlight affects the weather of an area. The temperature of any place on the Earth depends on where the sun is in the sky. Tropical areas near the equator, an invisible line around the middle of the Earth, have a hot climate because the sun shine almost directly overhead at noon. Areas near the North Pole and the South Pole have cold weather because the sun never rises very high there.
The sun gives us heat, light, and other kinds of energy. All life on Earth -- people, animals, and plants -- depends on this energy from the sun. Plants use sunlight to make their own food. As they make their food, plants give off a gas called oxygen. People and animals eat the plants and breathe in oxygen. In turn, people and animals breathe out the gas carbon dioxide. Plants mix carbon dioxide with energy from sunlight and water from the soil to make more food.
Image to right: The surface of the sun is made up of hot gases that give off light and heat. Credit: NASA/ESAU/Solar & Heliosphere Obser
vatory. From http://www.nasa.gov/worldbook/wbkids/k_sun_prt.htm
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