What is important to consider when deciding to use solar or wind power as a renewable energy source?

• A backup system is needed in case of cloudy days or days with no rain.
• How to minimize the amount of greenhouse gases emitted.
• How pollutants will affect the surrounding area.
• How to manage the large amounts of electricity generated.

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Unlimited; Does not produce pollution.

• Natural Gas
• Geothermal
• Biomass
• Solar

Expensive to use for large scale energy production and it is only practical for sunny areas.  This is a disadvantage of ______.

• Coal
• Solar
• Oil
• Wind

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What is the definition of CONDUCTION?

• When heat is transferred from objects like rays of light or electromagnetically.
• a  hot liquid or air that  expands, becomes less dense, and rises or becomes more dense, and sinks.
• When heat transfers from objects that are touching.
• When heat transfers through the heater or AC in your house.

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What kind of heat transfer happens when the sun is heating your body?

• Conduction
• Radiation
• Convection
• Density

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Warm air rises and the cool air sinks demonstrates this type of heat transfer. 

• conduction
• convection
• radiation
• Insolation 

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The direct transfer of energy by electromagnetic waves is __.

• convection

• conduction

• radiation

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What characteristic do all renewable resources share?

• Produced by waste products
• Form underground from dead organisms.
  
• Replaced in a short period of time
• Allow energy to pass through them easily

Unlimited; relatively inexpensive to generate energy, and does not produce pollution.

• Nuclear
• Hydroelectric
• Wind
• Biomass

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heat always travels from _____ to ______ objects

• hot to cold
• cold to hot
• cold to cold
• hot to hot

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