Environmental Science: A Global Perspective 1... · Local & Global perspective Many local...
Transcript of Environmental Science: A Global Perspective 1... · Local & Global perspective Many local...
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Environmental Science: A
Global Perspective
“All the flowers of all the
tomorrows are in the seeds of
today.”
Chinese Proverb
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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
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Period - 1
Environmental Problems
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Understanding Our
Environment
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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.
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What is Ecology?
The study of how
living things
interact with each
other and with
their non-living
environments
Pure Science
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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
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What is the Environment?
Everything that surrounds
Includes the natural world as well as
things produced by humans
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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?
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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
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What are the main
Environmental Problems
1. Resource Depletion
2. Pollution
3. Extinction
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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
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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.
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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…
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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.
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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
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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.
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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
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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?
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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.
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Understanding Science
Describe scientific methods
Explain the uses of tables, line graphs, bar
graphs, and pie charts
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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?
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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
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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
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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