Renewable Natural Resources

Chapter 5- Section 2

Solar

Advantages: Never runs out, clean and inexhaustible


Disadvantages: work less efficiently on cloudy days, can't work all night

Wind

Advantages: nonpolluting, free, does little harm to environment


Disadvantages: isn't steady, blows too hard, blows to slow

Hydroelectric

Advantages: always available


Disadvantages: have to build dam, lakes are filled with sediment

Geothermal

Advantages: use steam, rocks are found almost everywhere


Disadvantages:hard to control steam, hard to get

Biomass

Advantages: cheap source of energy, use wood


Disadvantages: lots of pollution, lessens tree population