Geology 1113 Exam #3 Questions With Answers

Geology 1113 Exam #3 Questions With Answers Which of the following statements describe what happens to sediment when a longshore current meets a jetty? Sediment is deposited on the up-current side of a jetty and eroded on the down-current side of a jetty. Which of the following describes the general pattern of movement of sand on a shoreline? The incoming waves push the sand onshore at an angle and the outgoing wave pulls the sand out perpendicular to the shore, resulting in a net movement that is parallel to the shore. Of the following options, which is the most common type of chemical weathering in a desert? Oxidation, iron-bearing silicates can produce a rust-colored stain tinting the desert landscape. What size sediment can be transported by wind? Sand, clay, silt What does the term saltation refer to? The skipping and bouncing of sand grains along the surface Most of the erosional work in a desert is done by running water What characteristic defines deserts? a dry climate, more evaporation than precipitation At what latitudes do the large-scale, atmospheric convection cells bring dry air downward toward the Earth's surface? Between 20-30° north and south Deserts that lie outside of 20-30° north and south are most likely the result of the presence of a rainshadow Precipitation occurs on the __________ of the mountain range, while the __________ is dry. windward side; leeward side When air __________, it is compressed and warmed. sinks Which of the following describes favorable conditions for transverse dune formation? Areas with steady prevailing winds and abundant sand Which of the following is a difference between barchan and parabolic dunes? The tips of a parabolic dune point into the wind, while the tips of a barchan dune point downwind.