renewable resources
Can be replaced within a human lifetime
Renewable Resources
True or False:
Nonrenewable resources can be replaced in a human lifetime
False
They cant
A _______spins the magnet in the generator which produces electricity
Turbine
Two Disadvantages of Wind Farms
•Many places are not windy enough
•Some noise pollution
•Can increase bird deaths
•High initial investment
•Generally a low output of energy
Nuclear power plants- fill in the blanks
Uranium atoms are hit with neutrons which cause the nucleus to _______. This is called __________
split
nuclear fission
Examples of renewable resources (six of them)
•Plants (trees)
•Animals
•Water
•Sunlight
•Wind
•Heat from inside Earth
Metals ______ replaced once removed from Earth
Cannot
In any electricity-generating power plant, __________ is needed to turn the turbine blades
steam, wind, or moving water
What is BIOMASS?
•Organic (once living) material derived from plants or animals
Fossil Fuel Power Plants
Adds large amounts of ______ into the atmosphere contributing to _________
CO2
global warming
Renewable Energy Resources LIST 3
1.Wind (Caused by uneven heating of Earths Air)
2.Solar
3.Biomass
4.Hydroelectric
5.Geothermal
List three Fossil Fuels
coal ,oil (petroleum), natural gas
Fill in the energy conversion for Coal Burning Power Plants
Chemical energy ----> ____ energy --->mechanical energy ----> ______ energy
Thermal
Electrical
How does GEOTHERMAL Energy work?
Takes high-pressure hot water from deep inside the Earth and convert it to steam to drive the generator turbines
3 reasons we don't use more renewable resources?
more expensive
geographically specific
power outputs are less
True or False
Renewable Resources take millions of years to form
False
Nonrenewable resources take ________ to form on Earth
millions of years
Fill in the energy conversion for Nuclear Power Plants
_____ energy ---> Thermal energy ---> _____energy ---> electrical energy
nuclear
mechanical
Three Disadvantages of HYDROELECTRIC Power
–Fish cannot move up and down the river to seasonal feeding areas and spawning areas (releasing eggs and sperm)
–Fish ladders and Lifts have been developed
–Areas behind the dam can flood
– Can change the water temperatures, chemistry, and flow characteristics of river or stream
–Turbines can kill fish that pass through
Biomass in landfills can be converted to _______ that can be burned in steam- electric power plants
methane gas
1. Which of the following is an example using a renewable resource?
Using a windmill to generate electricity
Burning coal to generate electricity
Using a windmill to generate electricity
About how many years do we have left of fossil fuels?
about 260 years
What is the advantage of nuclear power plants?
•Does not produce CO2 so it doesn’t contribute to global warming
Biomass energy contains ______ energy
chemical
Geothermal reservoirs in the United States are located where?
western States and Hawaii