Renew the New
The ____ is the most important source of renewable energy.
Sun
Crop residues are really good, high levels of energy: True or False
False
If we burn biofuels the carbon dioxide released in the atmosphere can last for ____ years.
100 years.
Around __ __% of the world's energy comes from Hydroelectric sources.
16%
By the year ____, the U.S. could generate 20% of our energy with wind.
2030
Fossil fuels and nuclear energy provide __ __% of the world's energy.
87%
What country burns almost all its garbage?
Germany
Sewage and landfills capture what gas to use for power?
Methane
Each day the sun provides __ __ __ times the energy compared to all other energy sources.
600 times
The two problems with wind generators are towers block the views and __________.
Blades hit birds
In 1850 91% of the U.S. energy consumption was ____.
Wood
The 6 countries that have a lot of forests are: 1) U.S., 2) Norway, 3) Finland, 4) Denmark, 5) Sweden, and 6)______.
Canada
In the country of Brazil, the crop used to make ethanol is ________.
Sugar cane
Hydroelectric power is _ _% of the power in the country of Norway.
95%
Wind power makes up only ___% of the world's power.
2%
Burning biomass can come from: 1) fuelwood, 2) municipal waste, and 3)_________.
Ag crop residues
__ __% of the waste and garbage in the U.S. can be burned.
80%
Gas in the U.S. has __ __% ethanol added to it.
10%
The two states that installed photovoltaic towers were ____ and ____.
Nevada & California
The 6 states with the most geothermal sources are Nevada, Utah, Oregon, New Mexico, Idaho, and ____.
Hawaii
There are 7 sources of renewable energy: Wind, Solar, Hydropower, Geothermal, Corn ethanol, Biodiesel, and _____.
Tides
The 4 wastes that can be burned are: 1) Sugar cane stalks, 2) Wood scraps, 3) Sawdust, and 4)____.
Waste paper
Challenges for using ethanol in the U.S. are 1) corn then costs high for livestock people, 2)corn then can't be used for food, and 3)_. _____
Not all cars can use ethanol
An ____ solar system has a pump, solar collector, and a system of pipes.
Active solar system
The 3 countries that have the most wind energy are the U.S., Germany, and ____.
China