1. Complete the text with the correct words.

ANALOGUE
Devices represent 1. similar to 2. . Analogue signals vary in time in a 3. way. Some devices convert analogue signals into digital signals.

DIGITAL
Digital signals vary in time in a 4. way. They are filtered, stored and 5. , then 6. back into analogue signals. Digital devices show values in the form of numbers (7. ).

Advantages of digital electronics
The advantages of digital electronics include higher 8. , easier information 9. , 10. improvement, and greater 11. .

2. Write the word that corresponds to each definition.

1. A decrease in the quality of something:
2. Similar to something:
3. The front part of a measuring instrument marked with numbers:
4. Individually separate and distinct:
5. A thin, long object moving on a scale to show measurements:
6. An instrument for measuring temperature:
7. To make a signal or a sound stronger or bigger:
8. A wave or an electrical impulse carrying information:
9. A device that makes a sound easier to hear:
10. The initial plan or project of something:

3.1 Describe how an analogue clock works. Use the Internet if you need to.

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3.2 Describe how an analogue manometer (used to measure tyre pressure) works. Use the Internet if you need to.

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3.3 Describe how an analogue voltmeter works. Use the Internet if you need to.

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3.4 Describe how an analogue thermometer works. Use the Internet if you need to.

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