Benefits in volcanic regions

Question 1

Give an example of an everyday mineral volcanic activity gives us access to

Answer 1

Copper

Question 2

How do we obtain mineral deposits at mid-ocean ridges?

Answer 2

Magma chamber creates a convection system that brings water in, heats it, it interacts with chemical in sea water and results in changed precipiation with sulfites

Question 3

Why will copper be in higher demand in the future?

Answer 3

As we move towards a cleaner future, needed

Question 4

Due to volcanic activity, soils tend to be very _____?

Answer 4

Fertile

Question 5

How do people in volcanic regions use their fertile soils?

Answer 5

Vineyards e.g. Mt Vesuvius

Question 6

What is the name for volcanic regions attracting tourists?

Answer 6

Geotourism

Question 7

What are the activities of geotourism in volcanic regions?

Answer 7

Lava flows and craters
Hot springs and spa resorts
Key revenue to present day volcanic regions

Question 8

How is geothermal energy obtained?

Answer 8

Heat in the earth mantle due to decay of radioactive elements
Groundwater heated and rises to the surface
Flow of internally generated heat across surface
Certain places, flow of heat is greater
Hot springs or steam vents where trapped hot water is released

Question 9

Globally, what % of energy usage is geothermal energy?

Answer 9

0.3%

Question 10

How much geothermal is used in Iceland?

Answer 10

65%

Question 11

What is a dry steam geothermal power plant?

Answer 11

Steam enters turbine, spinning generator converts kinetic energy to electricity, returns water to be reheated

Question 12

What is a flash steam geothermal power plant?

Answer 12

High temperature water only, seperated into steam and water, steam used in generator and water condensated into steam, water injected back to reservoir

Question 13

What is a binary cycle geothermal power plant?

Answer 13

Lower temperature used, heat exchanger boils fluid, steam goes to turbine, cooling tower condenses material, through to injection well

Question 14

What city is heated almost entirely by hot water piped from underground?

Answer 14

Reykjavik

Question 15

What is carbon capture and storage?

Answer 15

Removing carbon from the atmosphere and capture it in the rock
Adding co2 to earth rock e.g. basalt and periodotite lmakes it an inert material
During the final injection stage of geothermal energy plants

Question 16

What was carbon capture and storage originally invented for?

Answer 16

Geothermal energy from volcanic activity

Question 17

How much would it roughly cost to capture one ton of co2?

Answer 17

$25