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Earth and Weather

Published on Nov 18, 2015

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PRESENTATION OUTLINE

1.

Soil

rocks break into small pieces to become soil
Photo by NRCS Soil Health
2.

humus

adds nutirents to the soil
Photo by Dru!
3.

Landform

a solid feature on Earth's crust
Photo by vwbranom
4.

slow changes to landforms

  • weathering
  • erosion
Photo by Balthus Van Tassel
5.

WEATHERING

THE BREAKING DOWN OF ROCKS INTO SMALLER PIECES
Weathering is caused by water, wind, and plant roots.
It can take thousands of years for rocks to break down.
Photo by blentley
6.

EROSION

Water, wind and gravity cause erosion
Creep is a very slow type of erosion that moves rocks and soil.

Moving water, wind, and glaciers cause erosion.

Know how the shape of a river changes.

Know what causes sand dunes.
Photo by Sheba_Also
7.

Quick changes to Landforms

  • earthquake
  • volcanos
Photo by gnuckx
8.

EARTHQUAKE

THE SHAKING OF EARTH'S SURFACE
Photo by martinluff
9.

VOLCANO

AN OPENING IN EARTH'S SURFACE FROM WHICH LAVA FLOWS
10.

Natural Resources

material from earth that living things need
Photo by skoeber
11.

Renewable Resource

  • can be replaced in a fairly short time
  • trees, water, sunlight, air and soil
Photo by ...-Wink-...
12.

Nonrenewable Resource

  • cannot be replaced once its used up
  • ores, coal, oil, gas
Photo by David Basanta
13.

conservation

protect an environment from harmful changes
Photo by josh.ev9
14.

What are some ways to conserve resources?

Photo by Curology
15.

Sand

has largest rock particles
Photo by Ross Bucher
16.

silt

medium-sized rock particles
Photo by Marco Bellucci
17.

clay

rock particles are the smallest
Photo by squesada70
18.

Weathering Vs. Erosion

  • weathering breaks down rocks
  • erosion picks up weathered material and washes it away
Photo by foto3116

Dena Thomas