Renewable Energy
Nonrenewable Energy
Mining Techniques
Conventional Energy
Misc.
200

Has the highest EROI.

What is hydropower?

200

This energy source relies on the process of nuclear fission in uranium atoms.

What is nuclear energy?

200

This surface-mining method removes the top of a mountain to expose coal seams underneath.

What is mountain top mining?

200

The least expensive conventional energy source 

What is hydropower?

200

The amount of watts per kw

What is 1,000?

400

The name of the type/source of energy that arises from the Earth's surface in the form of magma

What is geothermal?

400

This fossil fuel is formed from ancient plant matter and is the most carbon-intensive fuel source.

What is coal?

400

This type of mining involves digging tunnels deep underground to reach ore deposits.

What is subsurface mining?

400

This type of power plant burns natural gas to heat water and spin a turbine.

What is a thermal power plant?

400

Net energy formula 

What is energy returned - energy invested? 

600

3 energy sources that turns turbine blades directly

What is wind, hydropower, and geothermal?

600

The nonrenewable energy source with the LEAST amount of land consumption

What is nuclear?

600

The attempt to restore a site to its original condition prior to mining

What is reclamation?

600

The three conventional sources of energy 

What is biomass, hydropower, and nuclear power? 

600

This country has the highest amount of oil reserves

What is Venezuela? 

800

The direction solar panels face from the Southern Hemisphere 

What is north/towards the equator?

800

This nonrenewable fuel is created from compressed organic matter found deep underground and is primarily composed of methane.

What is natural gas?

800

Digging a large hole in the ground to remove the desired ore, along with the rock near the ore

What is open pit mining?

800

The anaerobic bacterial breakdown of waste from landfills that produces methane and can be captured and sold as fuel 

What is biogas?

800
EROI of hydropower
What is roughly 80:1?
1000

How many types/ways are there for hydroelectric power

What is 3?
1000

This energy source is mined for use in nuclear fission and is one of the most energy-dense materials on Earth.

What is uranium?

1000

The process of heating an ore beyond its melting point and combining it with other chemicals to extract a metal.

What is smelting?

1000

This process increases the pressure in an oil reservoir to force out additional oil, often using water or CO₂ injection.

What is secondary recovery?

1000

Percentage of bitumen in oil sands

What is roughly 1 - 20%