1. Resources
7-4.6 Classify resources as renewable or nonrenewable and explain the implications of their depletion and the importance of conservation.

2. X-Rays of a 12
legged frog
found in a
California Pond

11. Cause?
Acid Rain

12. Fossil Fuels- Bill Nye (5:44)

13. Resources Renewable resources Nonrenewable resources
can be used and reused naturally
cannot be replaced by nature

14. Renewable Resources How often are renewable resources replaced?
Examples
Replaced through natural processes at a rate equal or greater than the rate at which they are being used
air, freshwater, soil, living things, sunlight

16. Renewable Resources Air Water
Can be cleaned and purified by plants during photosynthesis
CO2 in, O2 out
Water cycle allows water to be used over and over within the environment
Air
Water

17. Renewable Resources Soil
Topsoil is formed to replace soil eroded and washed away by water and wind
new soil forms very slowly

18. Renewable Resources: LIVING THINGS
PLANTS
Trees and other plants grow to replace those cut down or dead
ANIMALS
Animals are born to replace animals that have died

19. Renewable Resources
Will continue until the sun dies 4-5 billion years from now
source of energy for all processes on Earth
Sunlight/ solar energy

20. Energy Sources
Fossil Fuels
Wind
Wood
Sunlight

21. Nonrenewable Resources
Why not being replaced?
Exhausted:
being used and extracted and used at a greater rate that the rate they form
Exist in a fixed amount and can only be replaced by processes that take millions of years

22. Nonrenewable Natural Resources
Examples
Fossil Fuels
Petroleum
gasoline (liquid)
natural gas (gas)
Coal
Metals
Gold, silver, aluminum, copper, titanium
Minerals
Diamonds (ancient, pressurized coal)
Oil
Coal
Natural Gas

25. Conservation
Why conserve renewable resources?
Why conserve nonrenewable resources?
Natural resources can be depleted or used to the point that they are no longer available
If they are used at an increasing rate so that they cannot be naturally replaced fast enough, they too can be depleted
Nonrenewable resources are known to be a non-replenishing supply

26. Conservation Soil can deplete land of nutrients?
How can freshwater be depleted or unfit for natural use?
Soil lost b/c it is left bare of vegetation will erode
fertile topsoil needed for plant growth will be missing
too high of demand by population
wasteful use of water
pollution

27. Conservation
How can the depletion of living resources, like trees, affect the ecosystem?
Plants that not regrown/replanted can lead to changes in the land, air, and water

28. making a decision to not use a resource when there is an alternative
walking/biking vs driving to conserve fossil fuel (gas) and reduce air pollution
Reducing

29. Alternatives to fossil fuels (60% current use)
Solar
Nuclear
Water (hydrologic)
Wind
Geothermal
Fuels cells (run on H)

31. Reusing
Finding a way to use a resource (or produce from a resource) again without changing it or reprocessing it
washing a drinking glass vs disposable cup

32. Recycling
Reprocessing a resource (or product from a resource) so that the materials can be used again as another item
metals, glass, plastics remade into new products or fibers

33. Protecting
Preventing the loss of a resource (usually living things) by managing their environment to increase the chances of their survival
wildlife preserves for endangered animals

35. Why are trees considered natural resources?
Humans use them to produce paper, lumber, fuel, and other products.
They are an important source of firewood for campfires.
They grow back after they’re cut down.
They provide valuable shade that no other resource can provide
Which of these is a factual statement about natural resources?
As soon as they’re available, everyone should drive solar-powered cars.
Fuel cells are the most important technology we’ve ever developed.
Someday, humans will run out of fossil fuels.
Using wind energy will make us feel better about ourselves.

36. Why isn’t glass considered a natural resource?
Which is the most likely reason why soil erosion can be a major problem?
A region’s agriculture can be destroyed if the soil erodes.
Dangerous, radioactive elements exist under the soil.
Soil contains expensive minerals.
Soil is a non-renewable resource.
Why isn’t glass considered a natural resource?
It has a limited number of uses.
It isn’t used by humans.
It’s non-renewable.
It’s not found in nature.

37. What is the key difference between renewable and non-renewable resources?
All non-renewable resources pollute the environment; renewable resources do not.
Non-renewable resources exist in limited quantities; renewable resources do not.
Non-renewable resources exist in unlimited quantities; renewable resources do not.
Non-renewable resources must be refined before humans can use them; renewable resources do not.
Which of the following is the most sensible way to conserve natural resources?
Bike or walk to work instead of taking a gasoline-powered car.
Don’t use any products made from trees.
Never ride in a car.
Stop using electricity entirely.

38. How does recycling conserve natural resources?
Since it’s not in limited supply, solar energy is considered a sustainable energy source. What does sustainable mean?
Available to everyone.
Capable of being continued long-term.
Related to light and heat.
Related to the sun.
How does recycling conserve natural resources?
It allows us to re-process products instead of manufacturing new ones.
It prevents garbage from being burned.
It saves on the amount of fuel used by garbage trucks.
It saves on the amount of plastic used to manufacture garbage bags.

39. Why is wind energy considered a renewable resource?
It can be found in a variety of places.
It’s completely non-polluting.
It’s unlikely that we’ll run out of wind.
The wind can blow incredibly fast.