Listening: How Engines and Electric Cars Work

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B2 | Listening from video | 12 min

Watch the video (0:07 - 5:43). You can watch more than once, then answer the questions.

What did the two drivers achieve in their 2015 trip across the United States?

____ They crossed the country in a record number of hours____ They used about half the fuel the car was expected to use____ They drove the longest distance on one tank of fuel

ONE WORD from the video.

In a diesel engine, the ____ alone creates a small explosion.

What does the gas pedal control in a combustion engine?

____ The amount of air and fuel let into the chamber____ The temperature of the cylinder walls____ The speed of the spark in the engine

Most of the energy in a combustion engine is used to move the wheels.

____ True____ False____ Not Given

A NUMBER from the video.

Combustion engines produce about ____ percent of the world's total carbon emissions.

Why does gliding save fuel in the pulse-and-glide technique?

____ The engine works harder at low speeds____ The driver uses the brakes less often____ The wheels are driven by inertia instead of combustion

Electric motors are much quieter than combustion engines.

____ True____ False____ Not Given

A NUMBER from the video.

A typical electric car has only about ____ moving parts.

What happens during regenerative braking?

____ The battery sends extra power to the wheels____ The motor works in reverse and recharges the battery____ The brakes turn friction into heat for the cabin

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