What are natural resources? Natural resources are items we take from the Earth to use for living....
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Transcript of What are natural resources? Natural resources are items we take from the Earth to use for living....
Natural resources are items we take from the Earth to use for living.
• Who makes natural resources?
• Can you name some natural resources?
Nonrenewable Resource:
• A resource we get from the earth, that we can run out of someday. Once these resources are gone, we can NEVER get them back again in our lifetime.
• Fossil fuels» Petroleum oil» Natural gas» Coal
Fossil Fuels
• takes millions of years to form (make)• animals and plants die and are buried under
layers of sedimentary rock• Types of fossil fuels:
– coal– natural gas– oil
• Gasoline is NOT a fossil fuel but fossil fuels are used to make gasoline/petroleum
Fossil fuels are made out of plants and animals that died many, many years ago…..over 50 thousand years ago. Here is how it
goes…
and burn it in electric companies to make steam to make turbines spin to make electricity
for our homes.
once again to burn it in electric companies to make steam to make turbines spin to make
electricity for our homes.
Natural gas can be found in land and water
once again to burn it in electric companies to make steam to make turbines spin to make
electricity for our homes.
And once we run out of fossil fuels, we can not get them back again ….
That is why they are called
non renewable resources.
Alternative or Renewable Resources:
• A resource we get from the earth, that we can run out of, but we can always get more of.
» All Plants» All Animals» Soil
Soil is considered a renewable resource because when we use
it, we take the minerals and vitamins out of it.
Once gone, we must replace those minerals and vitamins with fertilizer….or the plants we plant in that location will not grow strong. They will be weak and not produce much food.
or
Can you name some more alternative or renewable resources?
• Water
• Air or wind
• Sun’s energy
• Biofuels
• Biomass
Solar Energy
• comes from the sun
• natural resource
• does NOT cause pollution
• cheap…sun’s rays are free
• solar panels can be expensive
• inexhaustible resource (never used up)
Wind energy• comes from the wind• natural resource• does not cause pollution• cheap, wind is free• unreliable because sometimes the wind
does not blow• wind farms becoming more popular• inexhaustible resource (never used up)
Hydro Energy
• comes from moving water
• natural resource
• does not cause pollution
• cheap, water is free
• unreliable because sometimes water is not available
• inexhaustible resource (never used up)
Static Energy
• comes from friction
• manmade and natural
• does not cause pollution
• cheap, rubbing 2 surfaces together
• not powerful enough for human to always use
• inexhaustible resource (never used up)
Chemical Energy
• comes from batteries or combustion
• manmade from natural resources
• expensive to create
• causes pollution sometimes– If using fossil fuels to make
• researching new ways to make (wind, water)
• both inexhaustible and nonrenewable depending on how its made
(heat energy)
• comes from the earth – fossil fuels
• natural resource
• decaying/decomposing plants and animals that died MILLIONS of years ago
• causes pollution
• expensive to get out of the earth
• we will run out someday
• nonrenewable resource (cannot be made)