Work on the topic and do the tasks

Get ready! 
Before you read the passage,talk about these questions. 
1 What is audio voltage measured in? 
2 What is atmospheric pressure measured in?

Reading
 Read the article. Then, choose the correct answers.
1. What is the main purpose of the article?
A to describe a technician's job
B to show how to calculate information
C to describe different measurement units
D to discuss different calculating formulas
2. Which of the following is NOT a measurement unit?
A an angular frequency
B a micron

C a watt-hour

D a variable
3. What of the following units does NOT measure an object's length/width?
A a millimeter 
B a millibar

C a micron

D an inch

MEASUREMENT UNITS IN ELECTRONICS

Electronics technicians collect information by utilizing different measurement units. These units include the inch, centimeter, millimeter, and micron. These units help technicians calculate an object's width and length. Technicians sometimes need to measure energy use. They use the watt-hour to measure power loads. And they use the decibel to measure audio voltages and current pressure. Technicians also measure angular frequency and phase angle. These units measure differences between different wave forms. Technicians also need to measure time differences. For those situations, they use the time constant formula. It helps them calculate reaction times for certain variables. Lastly, technicians also measure atmospheric pressure. The millibar enables them to calculate this number.

Vocabulary
Choose the sentence that uses the underlined part correctly.
1 A I am an inch taller than she is.
   B She used the angular frequency formula to calculate the atmospheric pressure.
2 A The amplifier produced about 250 microns of sound.
   B The technician found that the wire was about a centimeter too short.
3 A The tiny component measured four microns across.
   B The electrical current lasted for two watt-hours.

Match the words (1-7) with the definitions (A-G).
1 _ millibar 
2 _ phase angle 
3 _ millimeter 
4 _ watt-hour

5 _ decibel

6 _ time constant

7 _ angular frequency
A difference of degrees between voltage and current wave forms
B amount of energy a circuit uses in one hour
C increase in the voltage, current, or power 

D measures an object's length/width, is one thousandths of a meter
E measurement of reaction time for the output value to reach 63.7%
F measures atmospheric pressure
G a unit used to represent the relationship between different wave forms

Writing
Use the article to fill out the work report.
Work REPORT
Date: December 13
Submitted by: Jack Farrow
Work order #: 23587
I completed work order #23587 on December 13.
This__________ took approximately two hours to complete. The ________was not working properly due to the wiring. The wire was about
______ too _____.
I replaced it with the right -sized wire.
The computer is now in _____ order. I do not foresee any future ________.