Lesson 1 "Health and the Environment"

Turn to Page 384 Read the brief introduction to the chapter and look at the goals you will achieve this chapter.

Scan Pages 385-388; focus on the cream colored boxes, which contain the key vocabulary terms.

Scan Pages 385-388 for pictures and diagrams, read each of the captions.

Read Pages 385-388 (take notes of important ideas)

Do you know the answers to the questions on page 388? (See Key Points below for help)

Do you know the vocabulary words? (See Key Points below for help)

Take the quiz on Lesson 1 "Health and the Environment" (You may use the book, notes and Key Points for help on the quizzes. NOT ON TESTS!)

Review answers on the quiz and print it out. This will be very useful when you are studying for the test.

Lesson 1 Key Points

Vocabulary Terms

Environment - The system that connects, air, land, water, plants, and animals.

Pollution - the buildup of harmful wastes in the air, land, or water.

Ecology - the study of how living things are connected.

Section Review Answers

1. Plants give off oxygen, which animals need to breathe. Animals turn the oxygen into carbon dioxide, which plants need to survive.
2. Land that has been mined may be so damaged that it can no longer grow trees or crops. It may be unsafe for humans to live on.
3. Nature can break down normal wastes. Pollution consists of dangerous chemicals that nature cannot clean.
4. Ecology is the study of how living things are connected.
5. Nature can usually recover from the results of natural disasters over time. But human activity can disturb the environment in ways from which nature cannot recover.

Did you learn these Objectives?

Can you explain how the environment affects health?

Lesson 2 "Air Pollution and Health"

Scan Pages 389-392; focus on the cream colored boxes, which contain the key vocabulary terms.

Scan Pages 389-392 for pictures and diagrams, read each of the captions.

Take a look at the questions on page 392 so you know what to look for while reading.

Read Pages 389-392 (take notes of important ideas)

Do you know the answers to the questions on page 392? (See Key Points below for help)

Do you know the vocabulary words? (See Key Points below for help)

Take the quiz on Lesson 2 "Air Pollution and Health" (You may use the book, notes and Key Points for help on the quizzes. NOT ON TESTS!)

Review answers on the quiz and print it out. This will be very useful when you are studying for the test.

Lesson 2 Key Points

Vocabulary Terms

By-product - an unwanted result.

Hydrocarbon - a toxin caused by motor vehicle exhaust.

Toxin - a dangerous chemical.

Carbon monoxide - a pollutant caused by car exhaust.

Fossil fuel - a burnable substance formed in the earth from plant or animal material.

smog - air pollution formed by car exhaust and other pollutants.

acid rain - rain, snow, sleet, or hail with large amounts of sulfuric acid or nitric acid.

Asbestos - a material made of fibers that is used as an insulator; it can cause lung cancer.

particulate - a small pollutant, such as dust, ash, or dirt.

radon - a colorless, odorless, poisonous gas that is formed underground.

Greenhouse effect - a gradual warming of the earth's atmosphere.

Ozone layer - a region in the atmosphere that protects the earth from the sun's harmful rays.

Section Review Answers

1. The main cause of air pollution is the burning of fuels.
2. Smog makes the air look dirty and hazy. It creates ozone. Some people may have trouble breathing.
3. Radon gas is one natural cause of indoor air pollution.
4. The ozone layer shields the earth from the sun's harmful rays.
5. Air pollution causes acid rain, a greenhouse effect, and a reduction of the ozone layer.

Did you learn these Objectives?

Can you identify causes and effects of air pollution?

Lesson 3 "Water and Land Pollution and Health"

Scan Pages 393-396; focus on the cream colored boxes, which contain the key vocabulary terms.

Scan Pages 393-396 for pictures and diagrams, read each of the captions.

Scan for an read the short articles and tips that you find on Pages 393-396.

Read Pages 393-396 (take notes of important ideas)

Do you know the answers to the questions on page 396? (See Key Points below for help)

Do you know the vocabulary words? (See Key Points below for help)

Take the quiz on Lesson 3 "Water and Land Pollution and Health" (You may use the book, notes and Key Points for help on the quizzes. NOT ON TESTS!)

Review answers on the quiz and print it out. This will be very useful when you are studying for the test.

Lesson 3 Key Points

Vocabulary Terms

Groundwater - Water beneath the earth's surface.

Famine - a shortage of food

Landfill - a place where waste is buried between layers of earth.

Section Review Answers

1. Groundwater is the source for most of our drinking water.
2. The effects of an oil spill last for years because the oil spills are difficult to clean up since the spilled oil sits on top of the water.
3. You can conserve water in the shower by turning off the shower while you lather and clean and limit your time in the shower to vie minutes.
4. If a landfill gets too full, some of the trash may be burned. This pollutes the air.
5. A larger population requires more food, which strains land resources and our ability to feed everyone. A larger population will also need more cars and other products. This can cause the use of more resources and create more pollution.

Did you learn these Objectives?

Are you able to identify causes and effects of water and land pollution?

Lesson 4 "Promoting a Healthy Environment"

Scan Pages 397-400; focus on the cream colored boxes, which contain the key vocabulary terms.

Scan Pages 397-400 for pictures and diagrams, read each of the captions.

Scan for and read the short articles and tips that you find on Pages 397-400.

Read Pages 397-400 (take notes of important ideas)

Do you know the answers to the questions on page 400? (See Key Points below for help)

Do you know the vocabulary words? (See Key Points below for help)

Take the quiz on Lesson 4 "Promoting a Healthy Environment" (You may use the book, notes and Key Points for help on the quizzes. NOT ON TESTS!)

Review answers on the quiz and print it out. This will be very useful when you are studying for the test.

Lesson 4 Key Points

Vocabulary Terms

none

Section Review Answers

1. During a smog alert, you should try to avoid or reduce driving. People who have health problems should stay indoors.
2. Solar energy and wind energy are alternative energy sources.
3. Electric cars put out little or no pollution.
4. the government helps protect the environment by passing laws that limit the level of pollutants and the disposal of solid and toxic wastes.
5. Walk, ride a bike, or take mass transit instead of driving. Turn off the lights when you leave a room. Set air conditioners no lower than 75 degrees in summer. Keep the furnace set no higher than 68 degrees in winter. Recycle newspapers, cans, bottles, plastic, and paper and reuse items like paper lips. Select products that contain the least amount of packaging. Purchase consumable items, such as detergent, in refillable containers. Find alternatives to toxic products around your home.

Did you learn these Objectives?

Can you identity actions that protect and promote a healthy environment?

 Preparing for Chapter 19 Test

Turn to Page 401 and read the Chapter 19 summary.

On pages 402-403 you will find the Chapter 19 review, complete the review.

Check your answers with those in the Key Points.

Take the Chapter 19 Test "Environmental Health"

Review the answers then print the results for your records.

Chapter 19 Review answers

1. carbon dioxide
2. balance
3. pollution
4. Ecology
5. toxin
6. Ozone
7. pollutant
8. skin cancer
9. groundwater
10. bacteria
11. famine
12. Clean Air Act
13. Solar energy
14. landfill.
15. By-products of burning fossil fuels include smoke and exhaust.
16. Asbestos is a pollutant that has been used for insulation.
17. The greenhouse effect could cause global temperatures to rise.
18. Most solid wastes are stored in landfills.
19. If all the fish in a lake died, the populations of animals that depend on those fish for food would decrease or disappear.
20. Read the labels to find out if the supplies are toxic substances. If they are, you should check with your local department of sanitation or public works to find out how to properly dispose of them. You should not just throw them in the household trash or pour them in the sink or toilet.

Congratulations you finished Chapter 19!!