ENERGY SOURCES RENEWABLE energy sources are those sources of
ENERGY SOURCES
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ENERGY SOURCES SOL 6.2 b, c, d
description
ENERGY SOURCES. SOL 6.2 b, c, d. There are many important _______ _______ on Earth. energy sources. Our _____ is responsible for creating most of them. SUN. Energy cannot be created or destroyed . Energy Transformation. Energy Transfer. - PowerPoint PPT Presentation
Transcript of ENERGY SOURCES
ENERGY SOURCES
SOL 6.2 b, c, d
Our _____ is responsible for creating most of
them.
There are many important _______
_______ on Earth.
energy sources
SUN
EnergyTransformation
It can only be transferred or transformed.
Energy cannot be created or destroyed.
Energy Transfer
The most widely used energy sources on Earth make up a group
called FOSSIL FUELS.
There are many different energy sources that humans
use to power their homes, cars, businesses, and belongings.
“FOSSIL FUELS” are FUELS we burn that are MADE FROM FOSSILS.They come in THREE FORMS:
- a solid (COAL)-a liquid (OIL –also called PETROLEUM)-a gas (NATURAL GAS)
HOW IS COAL MADE ???
HOW ARE OIL AND GAS MADE ?
THERE ARE MANY OTHER ENERGY SOURCES TOO…
_________________
___ ____ __ _________ __ _________ __ _ ______ ________ __
_____.
Earth’s energy sources can be grouped into two types:
_________________
____ __ _________ __ _________ __ __ _____ _______ ___
______
Can NOT be re-made or re-grown in a short amount of
time
CAN be re-made or re-grown in a short amount of
time.
NON-RENEWABLE RENEWABLE
NON-RENEWABLE ENERGY SOURCES
RENEWABLE ENERGY SOURCES
WATER (HYDROPOWER,TIDAL, & WAVES)
COAL
OIL(PETROLEUM)
NUCLEAR
NATURAL GAS
WIND
SOLAR
GEOTHERMAL
BIOMASS
Foss
il Fu
els
Wood Leaves Crops Food Waste Manure
solar panel
wind
turb
ines
nuclear power plant
NON-RENEWABLE ENERGY SOURCES
COAL
OIL
(PET
ROLE
UM
)
NU
CLEA
R EN
ERG
YN
ATU
RAL
G
AS-Greenhouse gases when mined/burned-Soot when burned causes illness-Dangerous for miners-Mining pollutes land & water
-Radioactive waste-no safe disposal method.-Risk of radioactive leaks into air/water/soil cause cancer in humans-Expensive insurance paid by government.
FOSS
IL F
UEL
S
-LOTS of it in U.S.-Not too expensive to mine
-Less greenhouse gas -Can be made where energy is needed-Large supply of uranium
-Greenhouse gases when burned-Spills at oil wells & pipelines pollute land & water
-Easy to get out of ground & move through pipelines or by ship
-Greenhouse gases released when made, transported & burned-Risky to make (Gulf of Mexico-2010)-Need lots of water to make-Toxic chemicals when made
-LOTS in the U.S.-Easy to transport through pipelines
ADVANTAGES
DISADVANTAGES
RENEWABLE ENERGY SOURCESSO
LAR
WIN
DG
EO-
THER
MAL
WAT
ER(h
ydro
-)
-Must have sunny days -For large amounts, need large area such as the desert
-Endless & predictable supply-Does not pollute
ADVANTAGES DISADVANTAGESBI
OM
ASS
-Doesn’t pollute air & water-Can be located where energy is needed -Must be near water
-Water behind dams make greenhouse gas-Dams & reservoirs disrupt fish migrations –Building dams may require people to move
-Big supply in U.S.-Less polluting than fossil fuels
-Can only be used where it is produced-Expensive to get to deep supplies of this energy source
-Unlimited & constant supply-Non-polluting-Can be made most places -When corn is grown to burn for energy,
it’s not used as food for people or animals-Power plants to burn biomass or trash cleanly are expensive to build
-There’s a lot of it-Reduces trash in landfills
-Wind speed varies from place to place & at different times of the year-Can cause injury & death to birds & bats
THE GREENHOUSE EFFECT is…caused by a thin “blanket” of gases we call the atmosphere that surrounds our
planet.
BAD NEWS: Carbon dioxide (CO2) & other gases are
building up around Earth which is like adding an EXTRA
blanket,that keeps in TOO MUCH heat, making Earth TOO
warm & keeping unhealthy gases near Earth’s surface.
GOOD NEWS: This keeps Earth’s temperature
comfortable--no extreme cold or heat.
So…How does too much CARBON DIOXIDE get into the atmosphere?
MOSTLY from BURNING FOSSIL FUELS in our homes, cars, power plants, and factories.
* IF WE BURN MORE FOSSIL FUELS, THEN THE GREENHOUSE EFFECT AND GLOBAL WARMING WILL INCREASE,
WHICH IS HARMFUL TO LIFE ON EARTH.
INDEPENDENT VARIABLE (cause) _______________________________ DEPENDENT VARIABLE (effect)_______________________________
If we know that fossil fuels are causing the “greenhouse effect” & hurting our planet…
what can we do about it? (1)We can
DECREASE the use of FOSSIL FUELS, like: COAL, OIL, &
NATURAL GAS
(2) We can INCREASE the use of RENEWABLE energy
sources, like: SOLAR, WIND, HYRDROPOWER,
GEOTHERMAL, & BIOMASS.
