1. Components of the Earth
Environment & Resource Management

2. How the PowerPoints Work
For many lessons in the course, key points and visuals are displayed in PowerPoint slideshows which are available on the course website.
If you want, print the slideshows out in advance (you can print “handouts” with 6 or 9 slides on a page) so you can take notes on information talked about, without having to copy the screen.
The first slide will be a “table of contents” for the lesson, followed by any relevant text and visuals for that lesson.

3. Components of the Earth
Introduction
Components of the Earth
Key Terms

4. Introduction Course Outline Structure of the Course Field Studies
Environment Diagnostic Quizzes

5. Introduction
Imagine you are a first-class passenger on a spaceship hurling through space at 100,000 km/h
Poisonous gases are leaking into certain sections of the craft and several passengers are dying from the fumes.
The water supply has been contaminated due to a breakdown in the ship's waste expulsion system.
Food supplies are running out.

6. Introduction
Many passengers crowded into the economy section of the craft are seriously ill, and only a few of them are getting proper medical attention.
The spaceship has an overall destruct system and increasing numbers of technologists - some mentally unstable - have gained access to the controls of the destruct system.
What would you do?

7. Introduction
List your 5 top priorities in order of importance

10. Introduction Core Units Field Trips Environmental Systems
Human-Environment Interactions
Impact Assessment & Environmental Protection
Planning for a Sustainable Future
"Greening the Community"
Field Trips
Nonquon EEC
Toronto Zoo
Whitby field studies

11. Components of the Earth
Atmosphere is the mixture of gases surrounding the Earth and other planets.
Thermosphere
Mesopause
Mesosphere
Stratopause
Stratosphere
Tropopause
Troposphere

12. Components of the Earth
Hydrosphere is the part of the Earth composed of water (including clouds, oceans, seas, ice caps, glaciers, lakes, rivers, underground water supplies, and atmospheric water vapour).
Approximately 71% of the Earth is covered by water.
97% of this water is in the oceans (salt water)
3% is freshwater
77% of freshwater is locked in ice
22% of freshwater is in the ground
<1% of freshwater is in lakes, rivers, and wetlands

13. Hydrosphere

14. Components of the Earth
Lithosphere is the solid outer crust of the earth, while the mantle and core comprise the interior of the earth.
The lithosphere runs up to 60 miles deep, is divided into the crust and upper mantle.
The upper part of the crust is made of igneous and sedimentary rocks; this makes up the continents.
The lower crust is made of igneous rocks which form the ocean floors.
The inner layers of the earth are the mantle and the core

15. Components of the Earth
Lithosphere is the outer part of the earth, consisting of the crust and upper mantle.

16. Components of the Earth
Biosphere is the life zone of the Earth and includes all living organisms, including man, and all organic matter that has not yet decomposed.
The biosphere is structured into a hierarchy known as the food chain whereby all life is dependent upon the first tier (i.e. mainly the primary producers that are capable of photosynthesis).
Energy and mass is transferred from one level of the food chain to the next with an efficiency of about 10%.

17. Components of the Earth
All organisms are intrinsically linked to their physical environment and the relationship between an organism and its environment is the study of ecology.
The biosphere can be divided into distinct ecosystems that represent the interactions between a group of organisms forming a trophic pyramid and the environment or habitat in which they live.

18. Components of the Earth
Biosphere is the combination of the lithosphere, hydrosphere, and atmosphere that can support life.

19. Components of the Earth

20. Key Terms
Ecology - the study of how organisms interact with each other and their physical environment
Biodiversity - the variety of life on our planet, (measurable as the variety within species, between species, and the variety of ecosystems)
Carrying Capacity - the maximum number of individuals of a given species that a site can support during the most unfavorable time of year, without causing deterioration of the site

21. Key Terms
Ecological Footprint - a calculation that estimates the area of Earth required to supply the resources that an individual demands, as well as to absorb the wastes that the individual produces
Sustainable Development - Development that meets the needs of the present without compromising the ability of future generations to meet their own needs
Global Commons - natural assets outside national jurisdiction (e.g., oceans, outer space, Antarctica)