Resource #2: ForestsNatural Resource Mini Unit

Resource #2: Forests

• Forests are renewable resources• Forests are valuable to hikers, campers,

painters, cross-country skiers, etc.• Economic Value: supplying building materials,

paper, even food (walnuts, maple syrup) and medicine (in some tropical trees)

• Three types of forest logging methods...(on the next three slides)

1. Selective cutting: harvesting only mature trees, no seedlings required

2. Shelterwood Cutting:clear-cut smaller areas, leaving small patches untouched so the remaining trees can regenerate a more natural forest

3. Clear-cutting: cutting all trees in a large area, new seedlings of a fast-growing tree are planted for future logging

Forests: Discussion

• Which logging method do you think is the best? Why?

•Selective Cutting•Shelterwood Cutting•Clear-cutting

• Consider our Town Hall. Who would prefer the above methods and why?

Forests: Video

• http://www.youtube.com/watch?v=MSASCH-nt0c&list=PL9DE8CFCB12523A00 (5 mins)

• Can you find the connection to Dana’s presentation yesterday?

Resource #3: FishNatural Resource Mini Unit

Resource #3: Fish

• Who? Fish are a renewable resource• Where? Most fish are located along the

continental shelf (shallow zone of water along the edge of continents)

• What’s the problem? Worldwide resource depletion because of over-fishing, pollution of fish habitats and commercial fishing in oceans

Fishing Technology

New technologies allow big international fleets to take enormous hauls. Here is how it is done:

– Electronic sonar and GPS to locate fish– Ships cross the area, dragging huge nets

(trawling) at the right depth– Usable catch is often cut, packaged and frozen

right on board “factory ships”– Ships can remain on ocean for several weeks

before returning home

Problems?

• Huge nets take everything (including dolphins, sharks, sea turtles, immature fish, etc.)

• Results in millions of tonnes of waste every year

• Fish populations can’t renew themselves because so many young fish are caught

• Nets destroy sea bottom when dragged

Fish: Discussion

• How is the new fishing technology similar to clear-cutting forests?

Fish: Videos

• https://www.youtube.com/watch?v=6ps0truARKs (3min, sustainable fishing)

• http://ocean.si.edu/ocean-videos/reducing-bycatch (2min, reducing bycatch)

Resource #4: MineralsNatural Resources Mini Unit

Can you name the minerals in the pictures?

RECAP: Natural ResourcesWhere we’ve been and where we’re going...

1.Water (renewable and flow)2.Forests (renewable)3.Fish (renewable) 4.Minerals (non-renewable)5.Fossil Fuels (non-renewable)6.Energy (renewable and flow options)

Minerals

• Fuel Minerals = fossil fuels (oil, coal, natural gas, etc.)

• Non-Fuel Minerals = metallic minerals (gold, silver, copper, nickel, zinc, etc.)

Mineral Production / Mining

• Canada is among the leading nations of the world in mineral production

• Gold Rush– B.C. 1856– Yukon 1898

• Igneous Intrusives: magma flows that have intruded into surrounding rock and often contain mineral rich veins of gold, silver, copper and other metals

Mining Minerals: Video

• http://www.youtube.com/watch?v=GHJNnb2dDsk&list=PL388B991B5A1CA2A9 (Natural Resources Canada) – mining initiative (8 min)

In the News… (if time)

• Attawapiskat Aboriginal Reserve (at the tip of James Bay in Ontario)

• Debeers Diamond Mine nearby• Who are all the perspectives involved?• http://www.cbc.ca/news/canada/sudbury/

story/2013/02/19/sby-debeers-mine-blockade-attawapiskat-injunction-granted.html

Resource #5

Fossil

FuelsOil, Natural Gas, Coal, Uranium

Textbook Exploration• Pg. 162 – 164 (class read aloud while creating

a class note together - include 3 definitions)• Rest of the textbooks are in Ms. Mullins room

Fossil Fuels: Video

• http://www.history.com/topics/oil-industry/videos#black-gold (black gold - oil, 3 mins)

Finish early? Start into Resource #6 (longer one).

Resource #6: Renewable Energy

Natural Resources Mini Unit

What is Renewable Energy?

• Renewable Resource: a resource that can be replaced fairly quickly, such as forests and animals

• Energy (used for work) can be extracted from:– Non-Renewable Resources: Fuel Minerals / Fossil

Fuels (oil, coal, etc.)– Renewable/Flow Resources: Wind, Solar,

Hydropower, Geothermal, Biomass• Renewable Energy: energy that comes from

resources which are continually replenished

Five Types of Renewable EnergyCan you name the types in the pictures?

1. WindSummarize how each type works. Choose three key points for each.

2. Solar Summarize how each type works. Choose three key points for each.

3. Hydro1. A dam blocks water from moving where it wants to naturally2. Instead, the water flows through a pipe to a turbine, then back out on the

other side of the dam3. Turbines spin by force

of water and rotate a generator

4. Generator produces electricity and sends to power lines, bringing electricity to homes and businesses

Summarize how each type works. Choose three key points for each.

4. Geothermal1. The Earth's hot core creates magma and heats the Earth's crust which is

made up of rocks and water.2. A well drilled two miles deep into the Earth's surface captures the rising

hot water and steam.3. The hot steam rises to

the surface and pushes a turbine, which rotates a generator.

4. Generator produces electricity and sends it to power lines, which bring electricity to homes and businesses.

Summarize how each type works. Choose three key points for each.

5. Biomass1. Wood scraps, sawdust and crop waste are collected from farms or

manufacturing plants2. The waste is burned to heat water and create steam3. Steam is sent to a

turbine, which spins to power a generator

4. Generator creates electricity and sends to transmission lines

• Waste produced by cows or other farm animals creates a gas called methane, which can be captured to produce electricity.

Summarize how each type works. Choose three key points for each.

Renewable Energy: Videos

• Understanding Hybrid Cars• http://www.youtube.com/watch?

v=LV2W36fPWng (2min)• National Geographic “Energy Conservation”• http://video.nationalgeographic.com/video/

environment/energy-environment/energy-conservation/ (3min)