the YOSEMITE map Flashcards
What was the world’s First Federal Act to preserve nature?
Yosemite
What did this U.S. Act originally protect?
The area’s Yosemite Valley and Sequoia groves
What was Yosemite renamed to?
a “National Park”
When was Yosemite later expanded and renamed a “National Park”?
1890
What is the most popular viewing spot in the park?
Glacier Point
What is the park’s largest grove?
Mariposa Grove
With how many Sequoias?
Approximately 500
What was protected by Act of Congress?
Yosemite Grant 1864
Who signed it into law?
President Lincoln
Yosemite National Park is larger than what state?
Rhode Island
What trees are the World’s Largest?
Giant Sequoia Trees
What are Giant Sequoia’s average adult height?
Approximately 200-280 feet
What is the ONLY place these trees live?
the Western slopes of California’s Sierra Mountains
What does each Giant Sequoia endure on average?
fires every 25 years
What are Giant Sequoia trees longevity?
Approximately 3,000 years
Where is one of the highest fire hazard regions in the U.S.?
Yosemite Valley
What was a former Magma Chamber that cooled?
Half Dome
How long ago did it cool?
93 million years ago
What was Half Dome’s young cliff face due to?
Exfoliation (peeling by rock falls)
How often does it lose slabs?
every 3-5 years
What is America’s most impressive mass of exposed Granite?
Yosemite Valley
What was it once covered by?
Volcanoes
How did the peaks, domes, and valley shape form?
Underground by cooling magma that spread apart
What removed the fill to expose the valley we see today?
Later erosion and glaciation
