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37. At the bend in a stream, the main erosion is ____________________.a. on the outside of the bend.

b. on the inside of the bend.

c. both on the inside and outside of the bend.


38. The velocity of a stream _______________ as you move downstream.

a. Decreases

b. Increases

c. Stays the same from head to mouth.


39. The discharge of a stream _______________ as you move downstream.

a. Decreases

b. Increases

c. Stays the same from head to mouth.


40. Construction of dams upstream may lead to:

a. The building of barrier islands

b. The building of spits

c. Wider beaches

d. Narrower beaches


41. Spits form off of a headland due to:

a. decreased energy along the longshore current and deposition of sand.

b. increased energy along the longshore current and deposition of sand.

c. decreased energy along the longshore current and erosion of sand.

d. increased energy along the longshore current and erosion of sand.


42. What is the most common source of sand along our California beaches?

a. People bringing it in

b. Sierra-Nevada Mountains via

streams.

c. Erosion of land next to the beach.

d. The ocean floor


43. The movement of water within the surf zone that parallels the shore is called _______________.

a. Salinity Current

b. Longshore current

c. Tidal current

d. Beach drift


44. Normal faults exhibit _______________ stress.

a. Tensional

b. Compressional

c. Shear


45. A _______________ fault expresses displacement in the horizontal direction.

a. Normal

b. Strike-slip

c. Reverse

d. Thrust


46. Normal and reverse faults _______________.

a. Have mainly horizontal

movement.

b. Have mainly vertical movement.

c. Are faults where no movement

has occurred.


47. If we see a layer of sedimentary rock that has a fault cutting through it followed by an igneous

intrusion (dike) cutting into both the sedimentary layer and the fault, we can use the principle of

cross-cutting to infer:

a. The sedimentary bed formed first, then the fault, then the dike.

b. The sedimentary bed formed first, then the dike, then the fault.

c. The fault formed first, then the sedimentary bed, then the dike.

d. The fault formed first, then the dike, then the sedimentary bed.


48. A contact between parallel sedimentary rock layers that record missing geologic time is:

a. a nonconformity

b. an angular unconformity

c. a disconformity

d. a uniformity


49. The only required agent of metamorphism that needs to be present is:

a. Water

b. Heat

c. Confining pressure

d. Differential stress


50. Contact metamorphism results when:

a. Magma comes in contact with other rocks.

b. Lithospheric plates are in contact.

c. An earthquake occurs.

d. Rocks are buried deep within the crust.

Step-by-step answer

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