Chapter 1
Shaping the land and water
Chapter 2
From the Ohlone to the Gold Rush
Chapter 3
Engineering the Bay
Chapter 4
Innovations and cultural revolutions
YOUR GOAL
Master of Exploring the Bay Area
Ch 1 · Shaping the land and water
steve Shaping the land and water
The Golden Gate, it leads the way, Where ancient river valleys meet the Bay.

steve San Francisco's famous summer fog is created by a massive natural air conditioning system driven by temperature differences.

steve Two major active fault lines shape the Bay Area's landscape, making it one of the most seismically active zones in North America.
Fun Fact
Foggy water: San Francisco's summer fog can deposit up to 10 inches of water annually to help coastal redwoods survive dry seasons.
Glossary
estuary (noun)
The tidal mouth of a large river, where the tide meets the stream. This vast body of water drains forty percent of California's runoff, creating the region's iconic shoreline.
The tidal mouth of a large river, where the tide meets the stream. This vast body of water drains forty percent of California's runoff, creating the region's iconic shoreline.
Quiz
What ocean process brings cold water to the surface off the California coast, helping to generate fog?

