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Transcript of Flow Resources
What is a Resource?
A resource is any element in nature that is valuable and useful.
Hydro electric power is electrical power that is generated through the energy of flowing water. The three main types of hyrdoelectic power facilities are impoundment plants, diversion plants, and pumped storage plants.
Tidal energy is a form of hydropower that converts the energy of tides into electricity.
Wind Energy converts wind power into electricity.
By Brett and Lane
There are three types of natural resources: renewable, non-renewable, and flow.
A renewable resource can be replaced or used again. Examples are plants and animals.
Flow resources are neither renewable or non-renewable. They must be used when and where they occur or they will be gone. Examples are sunlight, water, and wind.
Non-renewable resources are formed so slowly in nature that they will be gone forever after they have been used. Examples are minerals and land.
Hydro Electric Power
Pros & Cons
Does not produce greenhouse gases, air pollution, and hazardous waste
Large dams can become tourist attractions
Can last many decades
W.A.C Bennett Dam
The W.A.C Bennet Dam is located in the Peace River near Hudson's Hope B.C. Construction began in 1963 and it opened it 1968. The construction cost $750 million and is the largest project of its kind in B.C. The dam feeds into Williston Lake, which the the third largest artificial lake in North America as well as the largest body of fresh water in B.C.
Impoundment plants use a dam to store water in a reservoir. This is the most coomon type of hydro electric facility.
Types of Facilities
Impoundment plants use a dam to store water in a reservoir. Water released from the reservoir flows through a turbine, spinning it, which in turn activates a generator to produce electricity. This is the most common type of hydro electric facility.
Diversion plants channels river water through a canal, where the water then powers a turbine. Diversion plants do not use dams and rely entirely on rain and snow fall for water.
Pumped Storage Plants
Pumped storage plants pump water from an upper reservoir to a lower reservoir that turns a turbine.
Fish cannot reach spawning grounds
Mercury levels may increase
Significant environmental damage
Can cause flooding
The cost to build a dam can be very high!
Pros & Cons
Is a renewable source of energy
Does not produce any greenhouse gases
Tides are easy to predict and therefore reliable
Can affect aquatic ecosystems
Could impact Earth's rotations
Few locations available
The Annapolis tidal plant is located on the Annapolis River in Annapolis Royal, Nova Scotia, Canada. It gets its large tides from the Annapolis Basin, which is a sub-basin of the Bay of Fundy. It opened in 1984 and is the only tidal energy generating station in North America.
Annapolis Tidal Plant
A dam is constructed across a tidal basin. High tide and low tide directed through a sluice gate, turn turbines. Tidal energy is powerful enough to generate significant amounts of energy.
Wind power is converted through the use of turbines. Wind turns blades, which are connected to a shaft. The shaft is connected to a generator, as the shaft turns, the generator creates electricity.
Pros & Cons
Is a renewable energy source
Does not produce pollution or greenhouse gases
Amount of wind is unreliable
Wildlife can become dangered
Few locations available
Castle River Wind Farm
Castle River is located near Pincher Creek, Alberta. It opened in November of 1997 and has 60 turbines today. The 60 turbines annually produce 125,000 megawatt hours of electricity, which is enough to reduce carbon dioxide emissions by 87,500 tonnes.
Solar energy can provide heat, light, and electricity. There are two types of solar energy, active and passive.
Active solar energy involves converting sunlight into other forms of energy. While passive solar energy uses the energy from the Sun without converting it into other forms.
Active Solar Energy
Active solar energy is done in two ways. One way to do this is by heating water in solar collector panels. The other type of active solar energy uses solar cells that contain solenoids. Solenoids convert solar energy into electricity.
Passive Solar Energy
Passive solar techniques include orienting a building to the Sun and designing spaces that naturally circulate air. Sunshine penetrates through the walls and windows.
Pros & Cons
Produce no pollution or greenhouse gases
Many locations to place
Is a renewable resource
Cost is coming down
Only generates electricity during daylight hours
Weather and pollution can effect the efficiency
First Light solar is Canada`s biggest solar plant. It is located in Stone Mills, Ontario and was opened in 2009. First Light made enough electricity to power approximately 1,000 homes in its first year of operation.That is equivalent of taking almost 1,800 cars off the road. First Light is responsible for removing 8,000 tonnes of carbon from the atmosphere.