Energy Sources
This type of solar heating depends simply on sunlight passing through glass windows.
These resources are limited and cannot be replaced on a human timescale.
nonrenewable resources
This is the most abundant type of water resource found on Earth.
Salt water
This is the term for a mineral deposit that is large and valuable enough to be mined for profit.
Burning fossil fuels increases the level of this gas in the atmosphere.
Carbon Dioxide
This technology is required to convert sunlight directly into electricity for "active" solar power.
solar cell or photovoltaic cell
Solar, wind, and hydropower are examples of this type of resource.
Renewable resources
Most of Earth's fresh water is "tied up" or trapped in these two frozen forms.
Glaciers and ice caps
To be classified as a mineral, a substance must have this type of organized internal structure.
Crystal Structures
The increase of CO_2 from burning fuels contributes to this global warming phenomenon.
Greenhouse effect
This energy source involves splitting atoms (fission) to create heat.
nuclear power
This fossil fuel is a nonrenewable resource often found near limestone and ancient marine fossils.
petroleum/oil
This term describes water that sinks into the ground and is stored in cracks in rocks.
Groundwater
This process involves elements and compounds being left behind after a liquid solution dries up.
Evaporation
Finding marine fossils in a dry area of Texas suggests the land was once covered by this
Ocean
This renewable energy comes from heat generated deep inside the Earth.
Geothermal energy
While wood is organic, it is considered this type of resource because trees can be replanted.
Renewable Resource
Deep underground reservoirs of water are called this.
Aquifier
This is the reason minerals are often found in high concentrations on the West Coast of the U.S.
tectonic/volcanic activity
This is a common environmental limitation or "drawback" of building large-scale alternative energy sites.
habitat destruction/disruption
This is a major drawback of biofuels like ethanol regarding the energy required to make them.
Energy to produce it is nearly equal to the energy it provides
This is the main reason why renewable resources are considered "sustainable" compared to fossil fuels.
They are not depleted/used up faster than they form
It can take this many years for very deep groundwater to exchange with surface water.
Millions of years
These are the three primary ways minerals form.
cooling magma, evaporating solutions, and high heat/pressure
As this "human" factor grows, the demand for energy increases and nonrenewable resources are used up faster.
Population