Third Grade
Worksheets
Grand Canyon
Grand Canyon National Park is in Arizona. It lies on the Colorado Plateau. The canyon was carved out by erosion. Erosion is the wearing away of rock by wind, water, or ice. The canyon was formed by the Colorado River. The canyon stretches for 277 miles. It is 6,000 feet deep at its deepest point. At its widest point, it is 15 miles across.
There are two rims at the Grand Canyon. The South Rim is the most easily reached part of the canyon. You can see the canyon from an overlook. The North Rim is harder to reach. Snow can close the roads for many months. It can be hard to reach in good weather, too.
Many fossils are at the park. Some fossils are over a billion years old! These oldest fossils were not animals; they were one-celled plant-like organisms. Mummified dung and hair have been found. Marine fossils have also been found. Scientists also study the rocks of the canyon.
