Earth Science Help

Virtual Field Trip:

The San Andreas Fault

1. The San Andreas Fault formed with which type of plate interaction?

a. Subduction plate

b. Transform plate boundary

c. Convergent plate boundary

d. Divergent plate boundary

Answer:

2. When did the San Andreas Fault appear?

a. 28 million years ago

b. 50 million years ago

c. 28,000 years ago

d. 50,000 years ago

Answer:

3. What two plates interact to form the San Andreas Fault?

a. Pacific plate and Nazca plate

b. North American plate and Pacific plate

c. North American plate and Cocos plate

d. Pacific plate and Caribbean plate

Answer:

4. What is an example of this plate movement?

a. The separation of California and Baja California

b. Rocks of Pinnacles National Park match those of Antelope Valley, nearly 200 miles away

c. The northward flow of rivers along the San Andreas fault

d. The Salton Sea

Answer:

5. What unlikely feature formed along the fault scarps of Central California?

a. The Salton Sea

b. Wallace Creek

c. Sag ponds

d. Pinnacle National Park

Answer:

6. In which direction does Wallace Creeks offset?

a. Northwest

b. Southwest

c. Southeast

d. Northeast

Answer:

7. The San Andreas Fault is called a:

a. Right lateral strike slip fault

b. Transform dip-slip fault

c. Right dip-slip fault

d. Transform strike slip fault

Answer:

8. Why do mountains form around Big Bend?

a. Magma surfaces when the San Andreas Fault creeps.

b. The bend in the fault causes this area to be bound, squeezed, and uplifted.

c. The fault is raised here.

d. Fault creep creates pressure, causing uplift.

Answer:

9. When was the last big Earthquake along the main fault?

a. 1989

b. 2011

c. 1906

d. 1871

Answer:

1. Short essay question: In your own words, what creates Earthquakes?