Grand Canyon Quiz

How long is the Grand Canyon?

• More than a mile long

• 277 river miles long

• 18 miles long

• 50 miles long

What makes the Grand Canyon "truly grand" according to the text?

• Its length and speed

• The presence of wildlife and fossils

• The colors, fossils, wildlife, and the layered canyon walls

• The river that snakes through it

What are the three "R's" that geologists agree on regarding the Grand Canyon?

• Rocks, Rivers, and Rain

• Rocks, Rapids, and Ridges

• Rocks, River, and 'Rosion (Erosion)

• Rivers, Ravines, and Ridges

What are the three types of rock that make up the Grand Canyon's walls?

• Limestone, sandstone, and shale

• Granite, marble, and basalt

• Quartz, gypsum, and slate

• Schist, gneiss, and conglomerate

What is the Grand Canyon today a result of, according to the text?

• The movement of tectonic plates

• The Colorado River cutting through layers of rock

• Volcanic activity

• Meteor impacts

What are the rocks near the top of the canyon compared to those at the bottom?

• Younger and softer

• Older and harder

• The same age but different types

• Younger and harder

What is limestone made from?

• Volcanic ash

• Fossilized remains of tiny organisms

• Pressed sand

• River sediment

What does sandstone originate from?

• Fossilized plants

• Pressed sand

• River sediment

• Ancient seas

How did the Colorado River contribute to the formation of the Grand Canyon?

• By depositing sediment

• By flowing uphill

• By eroding rock as it flowed

• By creating new rock layers

What role did ancient glaciers play in carving the canyon?

• They deposited new layers of rock

• They melted and flooded the river repeatedly

• They prevented the river from flowing

• They pushed the river uphill