11 terms

Houghton Mifflin 4th Grade Science Chapter 9 Lessons 1 and 2

Managing Earth's Resources
STUDY
PLAY

Terms in this set (...)

Natural Resource
A Material found on earth that can be used by people. Trees, Soil, Minerals
Nonrenewable Resource
A material that can't be replaced for thousands or millions of years once it has been used up.
Renewable Resource
Natural resource that can be replaced or can replace or renew itself. Water and Air
Evaporation
The process which liquid water changes to water vapor
Condensation
Process which water vapor turns back into liquid water.
Precipitation
Water that falls to the earth. rain, snow, sleet, hail.
Fossil Fuel
NON RENEWAL RESOURCE. These products are formed from the remains of ancient plants and animals. Oil, natural gas, coal.
Pollution
Adding of harmful materials to the air, water, and soil. Burning fossil fuels releases this.
Humus
A Material made up of decayed plant and animal matter. Rich soil contains this product
Soil Profile
A Cross section of soil that shows the different layers in soil.
Topsoil
The upper layer of soil that contains minerals and humus.