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ch8
science
| Question | Answer |
|---|---|
| Renewable organic matter such as wood and rice hulls are examples of _____ | biomass |
| The most abundant fossil fuel is _____ | coal |
| The wise and careful use of energy resources is called____ | conservation |
| Petroleum natural gas and coal are 3 kinds of _____ | fossil fuels |
| The type of fossil fuel that forms only from the remains of plants is ____ | coal |
| Unwanted radioactive products formed during nuclear reactions are called_____ | nuclear waste |
| Devices that use conductors to produce electricity from solar energy are ____ | Photovoltaic cells |
| Electricity produced by falling water is called ___ | Hydroelectricity |
| Water that flows dew to the gravitational forces among earth the moon and the sun has energy referred to as ____ | Tidal energy |
| The chain reaction in a nuclear reactor is controlled by inserting the ____ | Boron and cadmium rods |
| The efficiency of most power plants is approximately _____ | 35% |
| Which of the following is common to both nuclear fusion and nuclear fission | Matter is converted into energy |
| Which of the following is an example of a non renewable source of energy | coal |
| One reason alternative energy sources are needed is because____ | The supply of fossil fuels is diminishing |
| A disadvantage of using tidal energy is ____ | Equipment corrosion |
| In a nuclear reactor electricity is produced from_____ | Uranium 235 nuclei |
| The part of a nuclear reactor in which the fuel is located is called the ____ | Core |
| To control the reaction in a nuclear fission reactor the neutrons are slowed by ___ | Control rods |
| Petroleum is separated into gasoline lubricating oils and other produces through a process called ____ | Fractional distillation |
| Which of the following is a major problem with developing a fusion reactor | Maintaining very high temperatures |
| Name 3 nonrenewable fossil fuels used for energy | Natural gas,coal,petroleum |
| Name 3 renewable resources | Wind,water,sun |
| Why are wind and water not always practical or reliable energy sources | We could have a drought or the wind might not blow |