CSET Multiple Subjects Subtest I History & Social Sciences California Geography (Latest Update 2025 / 2026) Questions & Answers | Grade A | 100% Correct

CSET Multiple Subjects Subtest I History &
Social Sciences California Geography (Latest
Update ) Questions & Answers |
Grade A | 100% Correct

Multiple-Choice Questions


Question: What is the largest geographic region in California by land area?
Answer: Desert Region
Rationale: The Desert Region, including the Mojave and Colorado Deserts, covers the
largest area in southeastern California.



Question: Which mountain range forms the eastern boundary of California?
Answer: Sierra Nevada
Rationale: The Sierra Nevada runs along California’s eastern edge, separating it from
Nevada.



Question: What is the primary source of water for the Central Valley?
Answer: Sierra Nevada snowmelt
Rationale: Snowmelt from the Sierra Nevada feeds rivers and aqueducts critical to
Central Valley agriculture.



Question: Which California river is the longest?
Answer: Sacramento River
Rationale: The Sacramento River, stretching over 400 miles, is California’s longest
river.



Question: What is the largest natural lake entirely within California?
Answer: Clear Lake

, Rationale: Clear Lake in Lake County is the largest natural lake fully within California’s
borders.



Question: Which California region is known for its fertile agricultural land?
Answer: Central Valley
Rationale: The Central Valley is one of the most productive agricultural regions in the
world.



Question: What is the lowest point in California?
Answer: Death Valley
Rationale: Death Valley, at 282 feet below sea level, is the lowest point in North
America.



Question: Which California city is located at the mouth of the San Francisco Bay?
Answer: San Francisco
Rationale: San Francisco is situated at the entrance to the San Francisco Bay, near the
Golden Gate.



Question: What is the primary economic activity in the Imperial Valley?
Answer: Agriculture
Rationale: The Imperial Valley relies heavily on irrigated agriculture, producing crops
like lettuce and alfalfa.



Question: Which fault line is responsible for most of California’s earthquakes?
Answer: San Andreas Fault
Rationale: The San Andreas Fault is the primary tectonic feature causing seismic activity in
California.



Question: What is the largest desert in California?
Answer: Mojave Desert
Rationale: The Mojave Desert, covering southeastern California, is the state’s largest desert
region.

, Question: Which coastal feature is a major tourist attraction in Monterey County?
Answer: Big Sur
Rationale: Big Sur’s rugged coastline along the Pacific Ocean draws millions of visitors
annually.



Question: What is the highest peak in California?
Answer: Mount Whitney
Rationale: Mount Whitney, at 14,505 feet, is the highest peak in the contiguous United States.



Question: Which California region is known for its redwood forests?
Answer: North Coast
Rationale: The North Coast, including areas like Humboldt County, is home to California’s
iconic redwood forests.



Question: What is the primary source of irrigation water for Southern California?
Answer: Colorado River
Rationale: The Colorado River supplies water to Southern California via aqueducts like the
Colorado River Aqueduct.



Question: Which California valley is famous for its wine production?
Answer: Napa Valley
Rationale: Napa Valley is a globally recognized wine-producing region.



Question: What is the largest city in California by population?
Answer: Los Angeles
Rationale: Los Angeles is California’s most populous city, with over 3.8 million residents.



Question: Which California region experiences a Mediterranean climate?
Answer: Coastal Region
Rationale: California’s coastal areas, like San Diego and Santa Barbara, have a Mediterranean
climate with mild, wet winters and dry summers.