Solar Energy
When bacteria decompose organic wastes, one by-product is ___________, which can be burned to generate heat and electricity.
methane
Hydroelectric energy is electricity generated from what?
moving water
Energy from sources that are constantly being formed is known as what?
Renewable energy
In developing countries, you are most likely to find biomass used for what?
heating and cooking
Tidal power, hydrogen fuel cells, and ocean thermal energy conversion are sources of what type of energy?
Alternative
Ultimately, wind, plant growth, and the water cycle are all powered by what?
The Sun
A tidal power plant works much like which other type of power plant?
hydroelectric
True or False: New wind turbines are cost effective
True
The percentage of energy put into a system that does useful work is called what?
energy efficiency
Using gasohol or ethanol from corn in vehicles is an example of using what type of fuel?
Biomass
A photovoltaic cell converts the sun's energy into what?
electricity
Wind turbines convert the movement of the wind into what?
Electrical energy
Free points.
Name one type of biomass fuel.
Wood, dung
The production of two useful forms of energy from the same fuel source is called what?
cogeneration
The technology that uses solar collectors to gather energy from the sun is known as what?
active solar heating
What type of energy technology uses the temperature difference between layers of water to generate electricity is what?
ocean thermal energy conversion
You can increase the _____________ of a home by increasing the amount of insulation.
Energy efficiency
Where will you find geothermal power plants?
in areas where there are deposits of warm/heated water underground
Hybrid cars convert some of the energy of __________ into electricity.
A. Accelerating
B. Braking
C. Coasting
braking
Steal one point from two different groups.
Passive solar heating uses energy from the sun to ________ a home directly.
heat
Solar cells are also called what? (No, not solar panels.)
photovoltaic cells
Where do geothermal power plants get their energy?
pumping heated water or steam from rock formations
What is one way of increasing energy efficiency?
using public transportation; developing more efficient engines for vehicles (Not using less, just using energy more wisely.)