ELA 3rd Grade A18

Part A

1. What does the word "erosion" mean in the sentence?
   "The Colorado River continues to erode the rock, deepening the canyon and creating new features."
   

• 1. The process of breaking down and wearing away rocks

• 1. The process of forming new rocks

• 1. The process of planting new vegetation

• 1. The process of collecting minerals

Part B
Which sentence from the article helps the reader understand the meaning of the word "erosion"?

• "The canyon is carved by the Colorado River, which has been cutting through the rock for millions of years."

• "Over time, erosion has shaped the canyon into the breathtaking landscape it is today."

• "The Grand Canyon is constantly changing due to natural processes."

• "The canyon is home to a wide variety of plant and animal life."

Part A
What is the main reason the Grand Canyon is considered a significant place for Native American tribes?

• It is a source of freshwater for farming

• It is a sacred place in their creation myths

• It provides shelter from storms

• It is a popular tourist destination

Part B
Which sentence from the article supports the answer to Part A?

• "The Grand Canyon began attracting non-Native visitors in the late 1800s."

• "The canyon is deeply embedded in their cultural traditions and creation myths."

• "The Havasupai, Hopi, Navajo, and Zuni tribes have lived in or around the canyon."

• "In 1919, the Grand Canyon became a national park."

Why is the Colorado River important to both the Grand Canyon and the southwestern United States?

• It provides food for wildlife

• It shapes the canyon and supplies water to cities and farms

• It attracts tourists to the park

• It provides recreational activities for visitors