Unit 5 WED

Unsorted, angular, rough-surface cobbles and boulders are found at the base of a cliff. What most likely transported these cobbles and boulders?

• running water

• gravity

• wind

• ocean currents

Which type of weathering is most common where the average yearly temperature is 5°C and the average yearly precipitation is 45 cm?

• moderate chemical weathering

• very slight weathering

• moderate chemical weathering with frost action

• slight frost action

Which agent of erosion is most likely responsible for the deposition of sandbars along ocean shorelines?

• glaciers

• wave action

• mass movement

• wind action

Which statement best describes the weathering shown by the diagram?

• This type of weathering is common in regions of primarily warm and humid climates.

• This type of weathering occurs only in bedrock composed of granite.

• Enlargement of the cracks occurs because water expands when it freezes.

• The cracks become wider because of chemical reactions between water and the rock.

Which change would most likely cause soil layer X to increase in thickness?

• a decrease in rainfall

• a decrease in slope

• an increase in air pressure

• an increase in biological activity

Which activity demonstrates chemical weathering?

• dissolving of limestone by acid rain

• grinding of talc into a powder

• abrasion of a streambed by tumbling rocks

• freezing water in the cracks of a sandstone

Which sandstone layer appears to be the least resistant to weathering?

• A

• B

• C

• D

Which type of rock can be chemically weathered by acid groundwater to produce the caves and their features?

• siltstone

• limestone

• basalt

• quartzite

Which list best represents the primary processes occuring along the coastline at points A, B, and C?

• A - folding; B - subduction; C - crosscutting

• A - weathering; B - erosion; C - deposition

• A - faulting; B - conduction; C - mass movement

• A - precipitation; B - infiltration; C - evaporation

The primary force controlling the movement of streams and glaciers is

• deposition

• gravity

• climate

• insolation