LandformsEarth science 4

Aug 08

beach• a sandy shore where a body of water

meets the land

beach• a sandy shore where a body of water

meets the land

beach• a sandy shore where a body of water

meets the land

beach

beach

dune

dune • a ridge or hill of sand created by the

wind; found in deserts or near lakes and oceans

dune • a ridge or hill of sand created by the wind;

found in deserts or near lakes and oceans

dune • a ridge or hill of sand created by the wind;

found in deserts or near lakes and oceans

coastline

coastline

• shore; the border between land and a body of water

coastline

coastline

coastline

coastline from space

shore

shore • coastline; where a body of water meets

the land

shore • where a body of water meets the land

shore • It means the same as coastline

delta

delta

• A large area of deposition where a river flows into a lake or ocean

delta

A delta is made of sediment (sand, mud)

that was carried downstream by the river.

delta

a delta forms a new coastline further and further out into the ocean as it grows

delta

Sediment flows into the ocean but settles to the bottom when the water stops moving.

The result is a delta.

plain

plain

• a very large, flat area of land

plain

• a very large, flat area of land

plain plain with mountains in the distance

plain much of our country is flat plains

(shown in green)

Canada

USA

Mexico

plateau• an elevated, mostly flat area of land that has been

uplifted by geologic forces

plateau• an elevated, mostly flat area of land that has been

uplifted by geologic forces

plateau• an elevated, mostly flat area of land that has been

uplifted by geologic forces

canyon

canyon

• a deep valley with steep sides

canyon

canyon

a deep

valley

with

steep

sides

The Grand Canyonin Arizona

valley

valley• a long, low area of land surrounded by

higher land, usually with a river running through it

valley• a long, low area of land surrounded by

higher land, usually with a river running through it

valleya long, low area of

land surrounded

by higher land,

usually with a

river running

through it

Pacoima is in the

San Fernando Valley

volcano

volcano

• a mountain of igneous rock formed by eruptions of lava and magma

volcano

• a mountain of igneous rock formed by eruptions of lava and magma

volcano

This volcano is erupting

crater

crater• a bowl-shaped depression at the top of

some volcanoes

crater• a bowl-shaped depression at the top of

some volcanoes

cratera bowl-shaped depression at the top

of some

volcanoes

caldera

caldera• a very large volcanic crater;

• a depression caused by the explosion or collapse of a volcano

Mt. Saint Helens before the 1980 eruption

Mt. Saint Helens caldera after the eruption

Caldera in a shield volcano

floodplain

floodplain

• a nearly flat area near a river that is often flooded

floodplain

floodplain

This town is on a floodplain.

Sometimes the river overflows its banks.

meander

• a path, such as the course of a river, with many curves and turns

meander

• a path, such as the course of a river, with many curves and turns

Some rivers flow in a somewhat

straight path.

But many

rivers

meander

like this

one does.

outcropping

outcropping• a place where bedrock is exposed

outcropping• a place where bedrock is exposed

outcropping• a place where bedrock is exposed

We could dig here and find rock.

But at an outcropping, you don’t have to dig.