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Ciciotti ch.6

Fredonia ch. 6

QuestionAnswer
mineral a solid, natural material made from nonliving substances
luster the way a mineral REFLECTS LIGHT
hardness how a mineral resists SCRATCHING
sedimentary rock rocks formed from small pieces being pressed together
igneous rock rocks formed from lava
metamorphic rock rocks that are changed under heat and pressure
soil horizon three layers of soil
humus made of decaying plants and animals
topsoil the soil nearest the surface
pollution anything harmful to land, air, or water
conservation preserving natural resources
fossil fuel material made from decaying organisms that is now used for fuel
nonrenewable resource a resource that is used up faster than it can be made
renewable resource a resource that can be replaced naturally
alternative energy source energy source other than fossil fuels
reservoir an artificial lake built to store water
aquifer underground layer that is capable of absorbing water
smog type of air pollution from fossil fuels
ozone layer of Earth's atmosphere that protects it from the sun's rays
Created by: sciciotti
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