Shorelines

A longshore current is characterized by ___________.

• water that approaches the shore head on and washes directly back and forth across the beach.

• water that rises vertically at the shore and sinks as it washes further down the beach

• water that moves horizontally across the edge of the beach in a back and forth pattern

• water that approaches the shore at an angle and washes up and down the beach in a zigzag pattern

Tags

NGSS.MS-ESS2-6

An outward extension of sand that develops as a result of longshore currents moving sand down a beach is known as a(n) ____________.

• baymouth bar

• spit

• barrier island

• groin

A landform that is completely surrounded by water and runs parallel to the mainland is known as a(n) ____________.

• baymouth bar

• spit

• barrier island

• groin

____________ is the process by which humans retrieve eroded sand from underwater and place it back on the shoreline.

• Beach nourishment

• Sediment retrieval

• Beach replenishment

• Shoreline nourishment

One disadvantage of using a groin is that ____________.

• they create rough waters that contribute to shipwrecks

• prevent lagoons from being opened up to the sea

• they stop the flow of longshore currents

• they cause sand to build up on one side of the groin and erode on the other

A wall of concrete or stacked boulders that extend into the ocean on either side of a harbor entrance is known as a ____________.

• baymouth bar

• groin

• jetty

• seawall

_____________ are formed when wave erodes and undercuts rock on the shoreline.

• Sea cave

• sea stack

• headlands

• sea cliff

Tags

NGSS.MS-ESS2-2

______________ are offshore columns of resistant rock that were once connected to the mainland.

• Sea Cliff

• Sea Arch

• Sea Stack

• Sea Cave

A sea cave that cuts completely through the rock is called _____________________________.

• Sea Stack

• Sea Arches

• Headland

• Wave Cut Terrace

Large holes cut along the base of the cliff are called ____________________.

• Sea Stack

• Sea Cave

• Headlands

• Wave cut terrace

Tags

NGSS.MS-ESS2-2