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100
A natural material that is used by humans
What is natural resource
100
Name 3 nonrenewable resources
What is petroleum, coal, natural gas
100
Name 2 fossil fuels
What is coal and natural gas
100
A gaseous mixture of hydrocarbons
What is natural gas
200
Name three natural resources
What is wind, sunlight, trees
200
The process of reusing materials from waste or scrap
What is recycling
200
Most of the carbon in fossil fuels exists as hydrogen-carbon compounds called what
What is hydrocarbons
200
What is natural gas mostly used for
What is heating
200
The energy by the earth from the sun in the form of radiation
What is solar energy
300
A natural resource that can be replaced at the same rate at which the resource is used
What is renewable resource
300
Name 3 items that can be recycled
What is newspapers, aluminum cans, and cardboard boxes
300
A liquid mixture of complex hydrocarbon compounds
What is petroleum
300
A fossil fuel formed underground from partially decomposed plant material
What is coal
300
Electrical energy produced by falling water
What is hydroelectric energy
400
Name 2 renewable resources
What is trees and fresh water
400
A natural resource that humans use to generate energy
What is energy resources
400
Trains in the 1800s and early 1900s were powered by what
What is burning coal
400
Organic matter that can be a source of energyq
What is biomass
500
A resource that forms at a rate that is much slower than the rate at which it is consumed
What is nonrenewable resource
500
A non renewable energy resource formed from the remains of plants and animals that lived long ago
What is fossil fuels
500
What percentage of the worlds energy comes from petroleum products
What is more than 40%
500
What do petroleum and natural gas form from the remains of
What is microscopic sea organisms
500
The energy produced by the heat within the earth
What is geothermal energy