C. DEPOSITION The _____________ of particles and fragments.

It is also called

___________________

The agents of deposition are:

  ____________________

  ____________________

  ____________________

RATES OF DEPOSITION DEPEND ON:

1. Particle size: ________ particles (clay,silt) settle more slowly than larger particles.

________ do not settle out of solution unless the solution

becomes _______________

_____________ __________ are the ions that come out of solution.

&

2. Particle shape:

____________ between water and the surface of particles _______ settling.

As the surface area ___________ the time it takes to settle __________

3. Particle Density:

____________ particles settle faster.

Complete the graphs: label each axis

What is the relationship between settling rate and

particle size?

Settling rate

Particle size

What is the relationship between settling rate and

shape?

Settling rate

Particle gets flatter

What is the relationship between settling rate and

density?

Settling rate

density

Settling Rate and Settling Time:

Settling time

settling

As the rate of settling

The settling time

Complete the graph: this relationship is

indirect

rate

VELOCITY OF TRANSPORTING

MEDIUM: The slower the velocity of the water the ________ particles will settle. It takes longer for particles to settle

in ___________ water.

SORTING OF SEDIMENTS:

Horizontal Sorting: a gradual change in the size,shape and density

(of deposited particles) when a stream slows down

…………… ……………. ……………. ……………. Ions in solution

boulders

cobbles

sand

silt

Horizontal Sorting

clay

pebbles Roundest and densest

Smallest flattest least dense

(colloids)

Precipitation

Mississippi River Delta

Nile River Delta

Vertical Sorting &

Graded Bedding:

Largest at bottom

smallest at top

Each layer represents a single event of deposition

EROSIONAL-DEPOSITIONAL

SYSTEM:

___________ or

___________ are examples of this kind of system.

Within a stream system

energy transforms from

____________

to ____________

energy.

Erosion ______________Will dominate in the steeper section and

Deposition ______________ In places of less gradient or slope.

Kinetic Energy depends on

__________________ velocity increases Kinetic energy increases more erosion occurs

Slope-

Potential Energy depends

on__________ not Slope energy is stored and deposition occurs

height

Dynamic Equilibrium

When the rate of erosion equals rate of deposition:

___________________ is reached

Erosion occurs more often on _______

And Deposition occurs in large

bodies of _______

land

water

Ocean

lake A B

C D

Side View

lake

Ocean

A B C

D

Top View

Streams that flow over flat valleys

may develop meandering paths

because of erosion and deposition.

Glaciers

Sediments left by glaciers are:

_______________

Glacial erratics are large rocks that have been transported by glacial ice without being broken into

pieces

Some Glacial Features include: U-shaped valleys Moraines unsorted sediments drumlins kettle lakes finger lakes outwash plains erratics

Drumlins

outwash plain

Kettle lakes

WIND:

Sediments left by wind are

________________

Sand dunes may form with a gentle slope facing into the wind ________________ Windward side

And a steep slope on the opposite side___________

leeward side

When wind direction changes sand dunes cross each other creating a feature known as ________________ Cross bedding

Most sand dunes are well ___________

in sloping ____________ sorted

layers

Deposition on Coastlines by

Ocean Waves and Currents:

The sand grains are _____________ &

______________

rounded

frosted

_______ Generates

Waves

Wind

Waves move sand __________ to the shore parallel

Barrier beaches may form like Jones Beach or Fire Island

Wave action rounds sediments as a result of __________ abrasion