Question 1

Beaches will:&#10;A) mostly erode during the summer due to strong waves&#10;B) grow during winter due to sediment deposition associated with stronger waves&#10;C) mostly grow during summer due to sediment deposition associated with weaker waves&#10;D) none of these

Accepted Answer

During summer, waves are weaker and this allows sediment to settle on the beach, causing it to grow.

Question 2

Waves hitting the beaches are normally stronger:&#10;A) during the winter&#10;B) during the summer&#10;C) during daytime hours&#10;D) none of these

Accepted Answer

Waves tend to be stronger during the winter months when storms are more frequent and intense.

Question 3

Most sand found on the beaches comes from eroding cliffs.

Accepted Answer

Most sand on beaches actually comes from rivers and streams carrying eroded material from the land to the ocean, where waves and currents then distribute it along the coast.

Question 4

Dams along rivers that supply sediment to the beaches will result in:&#10;A) the growth of the beach&#10;B) erosion of the beach&#10;C) growth or erosion of the beach depending on the season and the amount of water released by the dams&#10;D) none of these, dams do not impact beaches

Accepted Answer

Dams along rivers that supply sediment to the beaches will prevent the natural flow of sediment downstream, resulting in a reduction of sediment supply to the beach. This can lead to erosion of the beach as waves and ocean currents continue to remove sand and sediment from the shoreline.

Question 5

This part of the coastline is covered during high tide but exposed during low tide.&#10;A) nearshore&#10;B) backshore&#10;C) foreshore&#10;D) none of these

Accepted Answer

The foreshore is the area of the beach that is covered and uncovered by the tides. It is the zone located between the high tide and low tide marks of the beach, where a variety of marine plants and animals like crabs, mussels, snails, algae, etc. live or feed. Therefore, the foreshore is the best choice for the given description. The nearshore is the area of the ocean closest to the shore, but not part of the beach, while the backshore is the area of a beach above the high tide line, only affected by storms and waves.

Question 6

These two factors are important in the development of dunes next to beaches:&#10;A) mostly unidirectional winds, sufficient sand supply&#10;B) abundant vegetation, humid climate&#10;C) desert climate, multidirectional winds&#10;D) desert climate, mostly unidirectional winds

Accepted Answer

Dunes next to beaches require mostly unidirectional winds, which blow the sand onto the beach and allow it to accumulate into dunes. Additionally, there must be sufficient sand supply for the dunes to grow. Vegetation and a humid climate are not necessary for the development of dunes next to beaches, so choices B and C can be eliminated. The answer is therefore choice A.

Question 7

Longshore bars form offshore during summer months.

Accepted Answer

Longshore bars typically form during the winter months when wave energy is higher, moving sand offshore and creating these features.

Question 8

Sandspits form by:&#10;A) erosional processes&#10;B) depositional processes&#10;C) tectonic uplift&#10;D) submergent processes

Accepted Answer

Sandspits are formed by depositional processes, which occur when sediment is carried by currents and waves and deposited along the coastline. Over time, this sediment accumulates and forms a spit, which can continue to grow as long as sediment supply remains sufficient.

Question 9

Which of the following are erosional coastal features?&#10;A) sea caves&#10;B) tombolos&#10;C) sea cliffs&#10;D) wave-cut platforms&#10;E) a, c, d

Accepted Answer

Sea caves, sea cliffs, and wave-cut platforms are all erosional coastal features. Tombolos, on the other hand, are depositional coastal features formed by the buildup of sediment connecting a mainland or island to a sea stack or offshore rock formation.

Question 10

Sea stacks indicate that the coast along which they occur is eroding.

Accepted Answer

Sea stacks are isolated pillars or columns of rock that are left standing after waves erode the cliffs along a coastline. The presence of sea stacks indicates that the coastline is actively eroding, often due to the effects of wind, waves, and water. As the surrounding rock is continually worn down, sea stacks can become more pronounced and may eventually erode away completely over time.

Question 11

Emergent coasts are associated with:&#10;A) uplift related to tectonic activity&#10;B) rising sea level&#10;C) sinking of the land due to tectonic activity&#10;D) all of these

Accepted Answer

The answer of Emergent coasts are associated with:&#10;A) uplift related...

Question 12

Drowned river mouths characterize:&#10;A) emergent coasts&#10;B) submerged coasts&#10;C) eroded coasts&#10;D) depositional coasts

Accepted Answer

The answer of Drowned river mouths characterize:&#10;A) emergent coasts&#10;B) submerged...

Question 13

Coral Reefs and atolls are landforms produced or modified by organisms.

Accepted Answer

The answer of Coral Reefs and atolls are landforms produced...

Question 14

Which part of the coast is submerged even at average low tide?&#10;A) backshore&#10;B) nearshore&#10;C) foreshore&#10;D) longshore

Accepted Answer

The answer of Which part of the coast is submerged...

Question 15

What caused most coastlines to become submerged over the past 10,000 years?&#10;A) subsidence of land&#10;B) sea level rise&#10;C) growth of icesheets&#10;D) tectonic shifts

Accepted Answer

The answer of What caused most coastlines to become submerged...

Question 16

Submarine canyons are to river valleys as drowned glacial valleys are to _____.&#10;A) wave-cut terraces&#10;B) cliffs&#10;C) beach dunes&#10;D) fjords

Accepted Answer

The answer of Submarine canyons are to river valleys as...

Question 17

Which of the following is not a result of deposition?&#10;A) baymouth bar&#10;B) tombolo&#10;C) sea stack&#10;D) sandspit

Accepted Answer

The answer of Which of the following is not a...

Deck 49: Coastal Landforms and Landscapes