Central Idea
What is the central idea of the article?
What, Why and How?
The article explains how Hoover Dam was built to control the Colorado River and help nearby communities.
What does achievement most likely mean in the sentence:
"It was hard to find an adjective to describe this amazing achievement."
Mistake
Success
Machine
Danger
How is this article mainly organized?
Compare and Contrast
Problem and Solution
Description
Cause and Effect
Problem and solution
Problem: = flooding and lack of water
Solution = building the Hoover Dam
Which deatil best supports the idea that building Hoover Dam was difficult
A. Millions of people visit Hoover Dam today.
B. The river caused flooding in California and Arizona.
C. Engineers had never built a concrete dam that large before.
D. Farmers needed water for crops.
C. Engineers had never built a concrete dam that large before.
What was one effect of building Hoover Dam?
A. The Colorado River disappeared
B. Nearby cities gained electricity and water
C. Farmers stopped growing crops
D. Engineers stopped building dams
B. Nearby cities gained electricity and water
Which sentence from the article best supports the idea that Hoover Dam benefited many people?
A. “The engineers would have to contain a powerful flow of water.”
B. “Thousands of workers would be needed to work on the dam.”
C. “This gave nearby areas electricity and water.”
D. “Millions of tons of concrete were mixed on site.”
C. “This gave nearby areas electricity and water.”
Why did the author most likely write this article?
A. To entertain readers with a story
B. To persuade readers to visit Hoover Dam
C. To explain how Hoover Dam helped control the Colorado River
D. To compare Hoover Dam to other dams
C. To explain how Hoover Dam helped control the Colorado River