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Earth Science chap 6

Minerals, Rocks, Soil, Fossils and energy, air and water

QuestionAnswer
ozone a layer of gas that surrounds the Earth and protects living things
fossils remains of ancient organisms in rock
luster the way a mineral reflects light
era a unit of time that is measured in millions of years
alternative energy source wind, moving water, solar energy
mineral a solid material found in the ground that is made of elements
pollution the harmful addition of materials to soil, air or water
rock cycle The process were rocks change from one type to another over time.
sedimentary rock a rock that forms in layers of dirt, dust, sand, and soil pressed together.
soil horizons soil is divided into 3 horizons no matter where it is formed
What type of rock forms when lava from a volcano hardens? igneous
smog type of pollution caused by particles in the air
What is fossil fuel? It is a material that is formed from the decay of ancient organisms and is used today as a source of fuel.
4 examples of fossil fuels bituminous coal (soft coal) anthracite (hard coal) oil natural gas
What is an aquifer? an underground body of water
What is a resevoir and why do we need them? it is an artificial lake built to store water and we need them to monitor and control our fresh water supply.
What is humus? This layer of soil is made of decayed plant and animal materials.
How do we find that absolute age of a fossil? 1. find the age of the rock it was in. 2. compare and identify the elements in the rock to determine its age.
In what type of rock are fossils usually found? sedimantary
Created by: Team 5
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