Listening: How dishwashers work and should you rinse?

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B1 | Listening from video | 11 min

Watch the video (0:06 - 4:45). You can watch more than once, then answer the questions.

What made Josephine Cochrane want a better way to clean dishes?

____ Her cook was too slow at washing them.____ Her dishes got chipped when they were washed by hand.____ She had too little space in her kitchen.

A NUMBER from the video.

When you press start, the dishwasher fills a small basin with water heated to ____ degrees Celsius.

How does the sensor find out how dirty the water is?

____ It smells the water for food.____ It measures how hot the water gets.____ It checks how much light goes through the water.

ONE WORD from the video.

The final rinse is hot enough to get rid of most ____ that can make people sick from food.

Liquid detergent can contain both bleach and enzymes.

____ True____ False____ Not Given

Why can rinsing dishes before loading cause a problem?

____ The machine may choose a short wash that does not clean hard crust.____ The machine will use much more water than before.____ The detergent will not dissolve in clean water.

A NUMBER from the video.

A dishwasher uses about as much water as running a kitchen sink for up to ____ minutes.

Which things can be damaged by the very hot water in a dishwasher?

____ Glass cups and metal pots____ Wooden items and some plastics____ Plates and bowls made of clay

A dishwasher uses less energy when it is run at night.

____ True____ False____ Not Given

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