TA Rocks, Minerals, and Soil

Created by EmilyKoz 

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22 terms

clay

type of soil that turns very hard when dry

composting

process for making decomposing plant matter necessary for soil

fossil

the trace or remains of an organism that lived long ago, most commonly preserved in sedimentary rock

horizons

Layers of soil

humus

decaying plant and animal matter

inexhaustible resources

resouces that humans and use and never use up

crystals

atoms arranged in repeating patterns

luster

the way a mineral reflects light

minerals

natural nonliving solids made of one or more elements

relative dating

figuring out the order in which events occurred

rock cycle

the process of rocks forming , wearing down, and them forming again

silt

slippery soil that can hold water

soil

a mixture of rock, plant material , animal matter, water, and air

soil conservation

preserving soil by using it wisely

streak

the true color of a mineral

water retention

how well soil holds water

3 types of rocks

igneous, metamorphic, sedimentary

sedimentary rocks are formed by

loose material pressing together and forming over time

oxygen is a

gas

soil is important to animal life because

it supports plant life which is essential in the food chain

soil can be lost to erosion by

animals that eat all of the plants

topsoil can be preserved by

planting trees and other plants

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