EARTH’S
SURFACES
Standard
Students will learn that volcanoes,
earthquakes, uplift, weathering, and
erosion reshape Earth's surface.
Today
We are going to learn about one of the
ways that shape the Earth’s surface.
WEATHERING
EROSION
AND DEPOSITION
WIND
WEATHERING
The breaking up of rocks
and minerals into
smaller pieces by a
natural process
EROSION
The loosening and
carrying away of rock
debris
DEPOSITION
The collecting and
placing of rocks and
minerals by a gradual
process
WIND
Hypothesis –
Is the weathering
Fast or Slow?
Wind Experiment
Wind Weathering
The wind hits the surface of the earth
and wears it away
Wind Erosion
The wind carries the loose soil away
(rock and plants help prevent this process)
Wind Deposition
The wind deposits the loose soil
in a new location
Is this process fast or slow?
Wind Disaster
One of America’s worst disasters happened
on the prairie of the Great Plains. The plains area
was covered with grasses. These grasses had deep,
finger like roots. Some years there was a lot of
rain. Other years there was very little rainfall. The
plains also had strong winds. When farmers started
to farming the area the burned foo all the prairie
grasses and plowed their fields.. The farmers
planted short root crops. Some years, they didn’t
plant anything at all. In 1930, a drought began on
the prairie and hot winds blew across the plowed
areas.
The wind blew across the areas with
shallow crops that couldn’t hold onto the soil
and the areas with no crops at all collecting
soil. The wind created a dirt cloud of millions
and millions of tons of topsoil. This cloud was
so large that it blocked the sun for miles. The
topsoil in the wind cloud blew as far away as 1,
500 miles away. The areas impacted was as
large as the area of Maryland and Connecticut
combined. Many farmers lost their farms and
so in 1935, congress gave advice on how to use
the land wisely.
Standard
We are learning that volcanoes,
earthquakes, uplift, weathering, and
erosion reshape Earth's surface.
Today
We learned about one of the ways that
shape the Earth’s surface.
UP NEXT
WATER