Name ______________________________________________________________________________________________________ Period ________
Erosion by Waves: How do waves cause erosion and deposition?
Guided Notes
Instructions: Navigate to your “to do” list, and open lesson 3-4 “How Do Waves
Cause Erosion and Deposition?” Complete the following notes as you go through
the slides in the lesson.
Slide 2: Waves contain _____energy______________ and are formed by __winds____.
breaking down rock
Waves shape the
coast through
erosion by:
moving sand and other sediment
impact
Waves erode the
land along the
coast by:
abrasion
Waves coming to __shore_______ gradually __change___ ____direction______________.
The change occurs as different parts of a wave begin to __drag___on the___bottom______.
The _____energy____________ of these waves is concentrated on ____headlands_______.
A headland is:
a part of the shore that sticks out into the ocean
Headlands are made of:
Harder rock
that:
Resists erosion
But over time, waves __erode_______the ____headlands______ and even-out the shoreline.
Slide 3: Ocean waves that hit a steep, rocky coast __erode_______the base of the land there.
Where the rock is___softer_______, the waves erode the land______faster____________.
What Landform Features are created on rocky coasts by Wave Erosion?
Complete the following table
Sea Cave
Wave-Cut Cliff
Sea Arch
Sea Stack
These form when
waves erode a
hollow area in the
rock.
These form when waves
eventually erode the
base of a cliff so much
that the rock above
collapses.
These form when waves
erode a layer of soft
rock that underlies a
layer of harder rock.
These form when an
eroded sea arch
collapses, leaving behind
a pillar of rock.
Slides 4-5: Waves shape a coast when they ___deposit__________ ______sediment_____.
The sediment deposited is usually_____sand_____________. Most of this sediment comes
from ___rivers______that carry ___eroded_____particles of rock to the____ocean_______.
As waves repeatedly hit the coast at an angle, some of the sediment moves along with the
current, in a process called:
Longshore drift
What Landform Features are created sea coasts by Wave Deposition?
Beach
An area of wavewashed sediment
(usually sand)
along a coast
Spit
Sandbars
Complete the following table.
Barrier Beach
A landform of
These form when
These form when
sediment (usually incoming waves storm waves pile sand
sand) that
carrying sand
up above sea level
projects like a
build long ridges forming a long, narrow
finger out into the of sand parallel to island parallel to the
water.
the shore.
coast.
Instruction:
Use your notes to help you complete your write in summary on
slide 6. Save and Close the lesson, then submit for grading by clicking on the I’m
Done bar.
Turn in your notes when complete.