Homework 12

About how long have wastewater treatment plants been in existence?

120 years

Approximately what percentage of people in Uganda has access to electricity?

3%

During peak usage, what happens to the cost of electricity?

It almost always increases.

Many pollutants from coal-fired power plants are properly managed today. Which of the following is currently considered to be the biggest threat to the environment?

carbon dioxide

What are the two types of aquifers?

confined and unconfined

Once a groundwater supply is contaminated with marine water, how long will it remain contaminated?

forever

What is the primary source of energy in rural areas of Uganda?

fuelwood

What is the primary source of electricity in Uganda?

hydroelectricty

Why do rural industries in Uganda have difficulty increasing production?

insufficient electricity to run machines

Based on the sources available to Uganda, what form of energy would be best for the rural areas of Uganda?

solar

Which of the following is considered to be the safest drinking water source?

the groundwater

Which of the following is a challenge to using solar-generated electricity in places not connected to a power grid?

the lack of efficient and inexpensive battery technology

Which of the following would indicate that a home is using solar power to generate electricity and is NOT using batteries?

There are solar panels on the roof and power lines going to the home.

Why is the Owen Falls Dam failing to meet Uganda's energy needs?

Uganda's population has grown rapidly.

Which of the following products of a wastewater treatment facility is often put on farm fields as a fertilizer?

biosolids

What color smoke coming from a coal-fired power plant would indicate wasted fuel?

black