SOCIAL IFLUENCE PHYSCOLOGY

Geothermal
Energy
Geothermal Energy is: - ANSWER ✓Energy derived from
the heat of the Earth
But, be captured in high concentration areas

Geothermal Energy consists of: - ANSWER ✓Steam &
Heat

Geothermal energy is the only form of energy- - ANSWER
✓independent from the sun

Historical uses - ANSWER ✓Roman Bath spa town in
Bath, England
sulfur= smelly = healing properties

19th-20th Century - ANSWER ✓Iceland -
Italy - 1st production of electricity, Lardello power station
New Zealand -
Northern California - geyser's Field, provides electricity

Enthalpy - ANSWER ✓The heat content of a substance
(per unit mass)

High Enthalpy - ANSWER ✓High: above 180-200 C

, Medium Enthalpy - ANSWER ✓Medium: 180-200 C

Low Enthalpy - ANSWER ✓Low: less than 100 C

Geothermal as a SOURCE OF HEAT - ANSWER ✓Heat
flows from hot center of the earth to cooler crust
temperature @ earths core = 1,000 C
Heat is transferred through the earth by convection and
conduction

convection - ANSWER ✓energy is transferred through
currents, the motion of molecules

conduction - ANSWER ✓energy is transferred by direct
contact between two materials of different temperatures

Geothermal Mining process - ANSWER ✓1. Wells drilled
2. hot fluid flows/is pumped to surface
3. hot fluid is then used:
(convential steam)
(turbines)
(heating)

Geothermal Mining takes place: - ANSWER ✓Takes place
@ the boundaries between the lithospheric plates

What makes a geothermal resource? (components) -
ANSWER ✓Components of a geothermal resource:
-aquifer containing water
-accessible by drilling
-cap rock- to retain geothermal fluid