Weathering

depositional features

sandbar

formed by wave action

spit

formed as longshore drift deposits sand along the shore

Subtopic

beach

waves pile up sand on the shore

waves create land forms

sea stack

left standing when a sea arch collapses.

sea arch

when sea caves on either side join together

sea cave

the waves hollow out the cliff

headland:a part of the shore made of harder rock that sticks out

they also erode by abrasion

it picks up sediment when it hits the beach and the sediment hits the land in other places and erodes it down

waves are formed from wind that blows across the surface.

waves erode the land from impact

it makes cracks in rocks bigger and break it apart.

Continental Glaciers

This covers much of a continent or an island.

an ice age is when glaciers cover much of Eartg's surface. Those would all be a continental glacier.

they spread out far around the land

Valley Glacier

a long narrow glacier that forms when ice and snow build up high in a mountain valley

they are found in the sufes of man y high mountains

they are confined between the mountains.

plucking

the weight of the glacier breaks the rocks apart and the rocks get squeezed in between the ice and they move away with the glacier

abrasion

the rocks that get stuck cause abrasion because they grind the bedrock underneath the glacier

Streams and rivers

at stream is a channel along which water is continually flowing down a slope.

A large stream is called a river.

runoff and erosion

runoff is water that moves over earth's surface and it is the major agent of the erosion that shaped earth's surface.

Amount of runoff

Amount of rain

vegitation

type of soil

how the land is used

shape of the land

Rills and gullies form whenrunoff travels because of gravity

they are grooves in the land from the water and sediment moving over it.

a floodplain is where a river overflows it covers the extra land around it.

types: Chemical and Mechanical

Mechanical

Plant growing

Actions of animals

Abrasion

Freazing and thawing

Release of pressure

Chemichal

Water

Oxygen

Carbon dioxide

Living organisms

Acid Rain

Rate of weathering

type of rock

rocks made of more minerals dissolf easier

Permeable rocks are full of little holes that water can seep through

Climate

Average wheather conditions in the area.

both types of erosion occurs faster in a wet climate

Deposition

loess deposits are made of sediment that is finer than sand

Sand dunes occur when wind strike an obstical and the sand builds up in a pile

abrasion

wind carried sand can polish the rock and cause little erosion

deflation

windremoves surface materials

Erosion is the process by which natural frces move weathered rock and soil from on place to another

Deposition occurs where agents of erosion deposit or lay down sediment.

sedimentt is the loose peieces of rock or soil moved by erosion

gravity is the force that moves rock and other materials downhill

mass movement

lanslides

rock and soil move quickly down a sleep slope

mudflow

a rapid downhill movement of water, rock aand soil

slump

a mass of rock and soil suddenly slips down a slope in one mass

creep

a very slow downhill movement of rock ad soil