plentiful
There was abundant evidence to support his theory.
acquire
get; pick up
I acquired the right to fire anyone who brings down the company.
alternative
substitute; other option
She suggested an alternative plan.
at a crossroads
faced with a decision to go one direction or another
She is at a crossroads in her life; either she accepts her boyfriend's proposal of marriage or declines it.
automobile
vehicle such as a car or truck
I want my first automobile to be a race car.
combination
group; two or more things put together
Hot chocolate and a good book is a perfect combination on a rainy day.
dam
structure that controls water flow, often for electricity production
The new dam will prevent the river from flooding the town.
efficient
productive, using minimal time and resources
This is not the most efficient way to do the job. I can show you a faster way.
electricity
energy in the form of charged particles
Refrigerators need a lot of electricity to work.
eyesore
something that is unpleasant to look at
My stepmother regarded me as an eyesore.
fossil fuel
carbon-based energy source (ex: oil and coal)
Fossil fuels such as natural gas are commonly burned to heat houses in the wintertime.
fuel cell
device that converts sources like hydrogen into usable energy
The fuel cell generates electricity as a by-product of a chemical reaction.
gigawatt
one billion watts of electrical power
If the best existing dams were upgraded to generate electricity, they could generate 17gigawatt of power.
gradually
slowly; over time
Nathan practiced every day and gradually became much better.
manufacture
make; create
The company that manufactures cars, makes a lot of pollution.
migrating
traveling a long distance (ex: birds migrating south in the winter)
Ducks are migrating birds.
moreover
also; additionally moreover, England’s winters have been getting warmer since the late 1980’s.
pose
present; cause
Smoking poses a threat to our health.
power grid
system that distributes electricity throughout an area
Some people who live in Asia's rural areas usually don't have the power grid.
renewable
able to be used and reused over and over
We should try to use energy sources that are renewable.
revolution
a complete or radical change of any kind
There is a phone revolution occurring with so many people making phone calls over the internet.
rural
in the countryside
The rural farm life can be quite calming and quiet.
solar panel
sheet that captures sunlight so it can be converted into electricity
Many newer homes have solar panels on their roofs to take advantage of the sun as a source for free energy.
transition
change; shift
The weather gets colder during the transition from summer to autumn.
underground
beneath the Earth
A subway is a train that runs underground.
used up
spent; emptied
Renewable energy can never be used up.
wind turbine
a tall pole with long blades that generate electricity by being spun by the wind
People have learned how to build wind turbines to turn wind energy into electric power.
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