Energy

Can energy be destroyed or created?

• Yes

• Sometimes

• No

• Depends

Fossil fuels include:

• Natural gas

• Petroleum

• Coal

• All of the above

Solar, geothermal, wind, biomass, and hydropower are considered renewable because they:

• convert directly into heat and electricity

• 
  are replenished by nature within a relatively short span of time

• Are free to use

• Do not produce pollution

Global warming primarily is concerned with the increase of which gas in the atmosphere?

• oxygen (O2)
• nitrous oxide (N2O)
• methane (CH4)
• carbon dioxide (CO2)

Energy in fossil fuels is stored

• Nuclear energy
• Kinetic energy
• Potential energy
• Chemical energy