Earth Materials and Soil Components

Front

soil component, very small and cannot see with bare eye

Back

clay

Front

naturally occurring substances that make up the Earth and are essential to life on the planet

Back

earth material

Front

tiny stones that are not quite as small as sand particles

Back

gravel

Front

any dead plant or animal material that becomes part of the soil

Back

humus

Front

small, smooth rock rounded by the action of water

Back

pebble

Front

naturally occurring, solid material that is made up of one or more minerals

Back

rock

Front

made up of small, loose pieces of rock, minerals, and other materials

Back

sand

Front

solid, dust-like sediment that is made up of mineral and rock particles that are larger than clay but smaller than sand

Back

silt

Front

loose, upper layer of the Earth's surface that's made up of a complex mixture of organic matter, minerals, air, water, and organisms.

Back

soil