7.2.2

Match each beach section with its description.

• dunes

• This region is usually above water.

• backshore

• Water covers and uncovers this region.

• foreshore

• This region stays underwater.

• offshore

• This region consists of small sand hills.

Tags

NGSS.MS-ESS2-4

NGSS.MS-LS2-3

Water flows ​ (a)   toward a beach but flows ​ (b)   back from the beach. The resulting ​ (c)   motion along the shoreline is called the ​ (d)   current. This current is responsible for moving sediment along the beach in one direction.

• at an angle
• straight
• zigzag
• longshore
• circular
• linear
• offshore
• low-tide
• high-tide

Which of the following contribute to the shrinking of a beach? Select all correct answers, including those that also contribute to beach growth.

• motion of sand into dunes

• sediment from rivers

• the longshore current

• sediment from cliff erosion

• sediment carried into deep water

Tags

NGSS.MS-ESS2-2

match the coastal landform with its description.

• Arch

• When waves strike rock along a coastline, they erode the base of the rock. An overhang is produced. As the waves continue to erode the base, a _________ is formed.

• Cave

• 
  Rock may become disconnected from a sea cliff or headland, such as when the top of a sea arch breaks. Such an offshore column of rock is called a _____________.

• Seastack

• Rock that projects out from the shore is called a headland. Waves may cut through a headland completely, producing a sea arch.

Tags

NGSS.MS-ESS2-2

Match the depositional feature with its description.

• Sand Bar

• A ______________________ is connected to the mainland at one end. They often form at the entrances to bays.

• Tombolo

• Thin stretches of land that run parallel to the shoreline and can change form based on wind and wave energy.

• Barrier Island

• Over time, a sand spit may extend across an open body of water, such as a bay.

• Sand Spit

• Deposition can produce a narrow piece of land that connects a barrier island or sand spit with the mainland.

Which are the main factors in the formation of erosional and depositional features? Select all that apply.

• force of the waves

• direction of the windresistance of the rock to erosion

• temperature of the air/water

• shape of the shoreline

• direction and strength of the longshore current

Explain how erosional coastal landforms such as sea cliffs are formed.

Tags

Understanding

The process by which sediment is carried by a longshore current and deposited as a straight extension from the shoreline is known as a sand ___.

Tags

Applying

Describe the factors that influence the rate of erosion of sea cliffs.

Tags

Applying