Question

1. your refrigerator uses 700 watts per hour and is only \on\ for 1/3 of the day. how many kilowatts does your refrigerator use for one day? be sure to show all your work and circle your final answer.

transportation audit lab: in this task, you conducted a transportation audit to measure the impact of your transportation habits. you analyzed that data with calculations, which you interpreted by using support from discussions and readings. use your knowledge from this task to help you answer these multiple - choice questions.

1. all of these consequences result from excessive usage of cars as transportation except

a. air, land, and water pollution from petroleum extraction.
b. greenhouse - gas emissions from automobile exhaust.
c. air pollution from automobile exhaust.
d. increased sense of community due to personal independence.
e. increased use of tax dollars for transportation infrastructure.

1. on average, which transportation method is the most environmentally friendly?

a. a motorcycle with a single rider
b. a compact car with three passengers
c. a commuter train that runs on electricity
d. a minivan with three passengers
e. a commuter bus that runs on diesel fuel

1. what are the three most used non - renewable energy sources we use?

a. coal, wind, oil
b. oil, solar, hydroelectric
c. geothermal, coal, natural gas
d. coal, oil, natural gas
e. oil, geothermal, coal

1. what was the clean air act of 1970? what did it do?

Explanation:

Step1: Calculate the total hours the refrigerator is "ON"

There are 24 hours in a day. The refrigerator is "ON" for \( \frac{1}{3} \) of the day. So the number of hours it is "ON" is \( 24\times\frac{1}{3}=8 \) hours.

Step2: Calculate the total watt - hours

The refrigerator uses 700 watts per hour. If it runs for 8 hours, the total watt - hours is \( 700\times8 = 5600 \) watt - hours.

Step3: Convert watt - hours to kilowatt - hours

Since 1 kilowatt = 1000 watts, to convert watt - hours to kilowatt - hours, we divide by 1000. So \( 5600\div1000 = 5.6 \) kilowatt - hours.

Answer:

5.6