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Environmental Science: A

Global Perspective

“All the flowers of all the

tomorrows are in the seeds of

today.”

Chinese Proverb

Shout Out

Think about 5 major environmental

problems that we are facing today

Pick a partner at your table and develop a

combined list of your top 5

Be prepared to share your ideas with the

entire class

Period - 1

Environmental Problems

Understanding Our

Environment

Objectives:

Compare the terms ecology and environmental science

Describe the 3 categories of environmental problems.

Explain how the difference between a population crisis and a consumption crisis.

Distinguish between renewable and nonrenewable resources.

What is Ecology?

The study of how

living things

interact with each

other and with

their non-living

environments

Pure Science

What is Environmental

Science?The study of how humans

interact with their

environment

Major goal: finding solutions

to address the problems

that humans have created

Applied Science

What is the Environment?

Everything that surrounds

Includes the natural world as well as

things produced by humans

Open Textbook to pg. 3.High school students in New Hampshire noticed a decline of a type of local freshwater mussel. What was the name of the mussels?

What may have caused the decline?

What did the students do?

Class work Assignment

Case Study: Lake Washington: Page 6

Read and then respond on a separate

sheet of paper and in complete

sentences.

– What is the issue?

– How was the issue resolved?

Answer Thinking Critically Questions

1&2

What are the main

Environmental Problems

1. Resource Depletion

2. Pollution

3. Extinction

What is Resource Depletion?

A resource is depleted when a large part of it

has been used up and it is not usable or

valuable anymore.

Natural resources are resources needed by

living things. Such as: sunlight, air, water, fossil

fuels, minerals, plants, animals, & forests

Two types of resources

1. Nonrenewable: cannot be replaced

– Ex: Metals, Fossil fuels, gems

2. Renewable: continually replaced

– Ex: Sunlight, water, air, wood

– Some renewable resources can be depleted

if overused.

Ex: Trees being cut faster than they can regrow.

What is Pollution?

The introduction of harmful levels of

anything into the environment. (air, water,

soil)

– Ex: smoke, mercury, nitrous oxides,

pesticides, heat, noise, etc…

What is Extinction?

The last individual of

a species has died

and the species is

gone forever

Some species are

disappearing faster

today than ever

before.

What is the Biosphere?

Thin layer around the

Earth where all life exists

Extends from 8km (about

5 miles) above the

surface to about 8 km into

the deepest part of the

ocean

Local & Global perspective

Many local environmental problems are

contribute to larger global problems.

– Sulfur dioxide released by coal power plants

in Ohio and Pennsylvania fall as acid rain in

Southern Canada.

– Trash that washes into the Monongahela

River sometimes finds it way down the

Mississippi River and into the Gulf of Mexico.

Environmental Problems Affect People

In…

1. Developed countries

– Highly industrialized/ high average incomes

– Consume more resources and create more pollution

per person

– Ex: US, Japan, Canada, western Europe

2. Developing countries

– Less industrialized/low average incomes

– Consume less resources per person but contain

over 2/3 of the world’s population

– Ex: China, India, Kenya

How do problems happen?

When the human population grows too rapidly

for the environment to support it, the

environment suffers and is depleted.

– This leads to a Population Crisis.

When a population uses its and other countries

natural resources faster than those resources

can be renewed, replaced, or cleaned up.

– This leads to a Consumption Crisis.

What category of countries do you think these

crises occur in?

What is a Sustainable world?

A world in which human populations can

continue to exist indefinitely with a high standard

of living and health

– Nonrenewable resources – used sparingly and

efficiently

– Renewable resources – used at a rate in which they

could be replaced

This is the goal of solving environmental

problems.

Understanding Science

Describe scientific methods

Explain the uses of tables, line graphs, bar

graphs, and pie charts

Science

Pure Science: seeks to answer questions about

how the real world works.

Applied Science: uses information found by pure

science to solve problems

Where does environmental science fall?

What about ecology?

What is science?

– Something you know

All information that we know up to this

point.

– Something you do

A way of getting the answers to questions

about the world around us

Scientific method

Used to provide accurate answers to our questions

Using your text, identify the steps of the scientific method.– O

– H/P

– E

– O/I D

– U G

– C R

Classwork

Define bold face terms (16)

– Sections 1 & 2

– Number and Underline each term

Section Review Questions

– Page 12 #1, 2, 3

– Page 19 #1, 2, 3, 4