Approximately 99% of the vehicles in the United States are powered by fuel from this source.
What is petroleum products (such as gasoline and diesel)?
100
This type of engine has a four-stroke cycle:
Intake: Air-fuel mixture is drawn in.
Compression: Air-fuel mixture is compressed.
Power: Explosion forces piston down.
Exhaust: Piston pushes out burned gases.
What is an internal combustion engine?
100
Designed in the late 1800s, this vehicle stores energy in a battery and produces no tailpipe emissions.
What is an electric vehicle?
100
Motor vehicles emit more than 900 million metric tons of this gas every year.
What is carbon dioxide?
100
This is least expensive commercially available fuel to power vehicles.
What is gasoline?
200
This automotive fuel is derived from plants and is used in internal combustion engines.
What is biofuel?
200
This vehicle combines two energy sources – an energy conversion unit (such as a combustion engine) and an energy storage device (such as a battery).
What is a hybrid electric vehicle?
200
Henry Ford designed his Model T to run on a mixture of gasoline and this, calling it the fuel of the future.
What is ethanol?
200
In the United States, electricity for plug-in electric vehicles is principally generated by this energy source.
What are coal-fired power plants?
200
This city is consistently ranked as being both the most congested city and having the worst air quality of any other city in the United States.
What is Los Angeles?
300
This type of biofuel is made from fermentation of plants such as corn, switchgrass, or algae. When used as a fuel, it produces very few emissions.
What is ethanol (or bio-ethanol)?
300
This type of engine uses the pressure of compression inside the engine cylinder to ignite fuel. It does not use spark plugs.
What is a diesel engine?
300
This type of vehicle outnumbered gasoline-powered vehicles by two-to-one in the early 1900s.
What is an electric vehicle?
300
This is a major cause of oil pollution in marine waters.
What is surface water runoff?
300
The United States imports approximately 49% of this fuel type from other countries.
What is petroleum (gasoline and diesel)?
400
94% of our goods are shipped using vehicles powered by this transportation fuel. This has 30-35% better fuel economy than gasoline.
What is diesel?
400
This vehicle is designed to run on a combination of gasoline and up to 85% of ethanol.
What is a flex-fuel vehicle?
400
Most gasoline sold in the United States contains this percentage of ethanol.
What is a 10%?
400
The burning of fossil fuels (including our automobiles) can play a role in CO2 dissolving in our marine waters, which can change this.
What is pH?
400
Plug-in electric vehicles in Washington receive most of their electricity from this energy source.
What is hydroelectric power?
500
This type of biofuel is made from vegetable and animal fats and can be used in diesel engines. It produces less sulfur emissions than gasoline-powered vehicles.
What is biodiesel?
500
Fuel cells use this and oxygen to produce electricity without harmful emissions; water is the main by-product.
What is hydrogen?
500
This company developed an electric car that is capable of traveling over 270 miles on one charge.
What is Tesla Motors?
500
This part of a car causes copper pollution in marine waters and impacts salmon’s ability to find their spawning grounds.
What are car breaks?
500
These types of vehicles make up more than half of all vehicle sales
What are Sport Utility Vehicles (SUVs) and light trucks?