2. WHAT IS COAL?
- COAL IS AN UNRENEWABLE SOURCE OF FUEL
WHY?
- COAL IS FORMED FROM VEGETATION THAT
CAN BE AS OLD AS 400 MILLION YEARS OLD.
(THAT IS WHY IT’S CALLED A FOSSIL FUEL)
4. HOW IS COAL FORMED?
PEAT – DECOMPOSED SUBMERGED PLANT REMAINS
LIGNITE – YOUNG COAL. IT HAS LOW CARBON
CONTENT
PEAT + PRESSURE +
HEAT + TIME = COAL
5. WHAT ARE THE TYPES OF COAL?
MORE CARBON = MORE HEAT
COAL RANK CARBON CONTENT
ANTHRACITE 98%
BITUMINOUS 85%
LIGNITE 60%
6. WHAT ARE THE USES OF COAL?
- ELECTRICITY (STEAM TURNS
TURBINES)
- CREATION OF INDUSTRIAL
MATERIALS
(STEEL, IRON, PLASTICS, TAR, SYNTHETI
C FIBERS, ETC.)
7. WHAT ARE THE ADVANTAGES OF COAL?
- HIGHER HEATING VALUE COMPARED TO BIOMASS.
- MORE ABUNDANT THAN OIL.
VS
BETTER
VS
BETTER
8. WHAT ARE THE DISADVANTAGES OF COAL?
- TUNNEL COLLAPSE
- EXPLOSIONS
- FIRES
- MINERS CAN SUFFER LUNG DISEASE
- POLLUTION
- CARBON DIOXIDE RELEASE
