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Ch 5: Energy Resources

Across
________ is organic matter that can be a source of energy. (85)
_______ happens when an atom splits into two or more lighter atoms. (81)
The fission products created in nuclear power plants are _________. (82)
_________ is a mixture of hydrocarbons that are in the form of liquids. (77)
______ precipitation is rain, sleet, or snow that contains a lot of acids, often because of air pollutants. (79)
Newspaper, aluminum cans, some _______ containers, and many types of paper can be recycled. (73)
__________ means using things that have been thrown away to make new objects. (73)
People use some natural resources, such as coal and wind, for _______. (71)
_______ energy is the energy that is released when atoms come together or break apart. (81)
A ____________ resource is a resource that is used much faster than it can be replaced. (72)
______ is a brownish haze that forms when sunlight reacts with pollution in the air. (77)
A _______ ________ is any material from Earth that is used by people. (71)
________ cells, or solar cells, can change sunlight into electrical energy. (84)
______ happens when two or more atoms join to form a heavier atom. (82)
Petroleum can be harmful to animals and their _________.
_____ is air that is moving. (83)
A part or function; purpose (76)
Remember that people remove coal from the Earth by _______ it. (79)
You can conserve energy by being _______ to use it only when you need to. (73)
________ energy sources are sources of energy that are not fossil fuels. (81)
______ plants use the energy to produce electricity. (75)
A ______ ____ is an energy resource made from the remains of plants and tiny animals that lived long ago. (75)
Down
Alcohol can be mixed with gasoline to make a fuel called ______. (85)
To change; to act upon (76)
At a ________, petroleum is separated into many different products, including gasoline, jet fuel, kerosene, diesel fuel, and fuel oil. (77)
Natural resources are grouped based on how ______ they can be replaced. (72)
______ cells are devices that change chemical energy into electrical power. (83)
Natural gas can be _______ because it burns very easily. (76)
The heat and light that Earth gets from the sun is ______ energy. (84)
In order to _______ natural resources, you should try to use them only when you have to. (73)
Fossil fuels are nonrenewable, which means that they cannot be replaced once they have been used. Also, when they burn, they release _______. (75)
A __________ is a compound that contains the elements carbon, hydrogen, and oxygen. (76)
___________ energy is electrical energy produced from moving water. (84)
A ________ resource is a natural resource that can be replaced as quickly as people use it. (72)
_______ ____ is a mixture of hydrocarbons that are in the form of gases. (76)
The electricity that is produced by ________ is called wind power. (83)
_________ energy is energy produced by the heat within Earth. (85)
Some of the sea life that dies today will become natural gas ______ of years from now. (76)
_____ is a solid fossil fuel that is made of partly decayed plant material. (78)
_______ means “to begin again.” (72)