7U4L4a Renewable Resources

7U4L4a Renewable Resources

Renewable Energy Resource

• Energy sources that renew or replenish themselves over time

• Energy sources that are not depleted or used up when you use them

What do we mean by Advantages or Disadvantages?

• Advantage means good effect, favorable gain, or desired end

• Disadvantage means bad effect, unfavorable, or undesired end

Multiple Choice

Renewable resources are generally "clean" meaning they do not pollute. Is this and advantage or disadvantage?

• advantage (benefit)

• disadvantage (problem)

Multiple Choice

What is one advantage of wind energy out of the choices below?

• Turbines are very expensive

• Wind turbines only create air pollution

• Wind turbines are inexpensive

Biomass

• Energy from any material that comes from plants or microorganisms that were recently living

• Trees, branches, scraps of bark, and recycled paper are examples of biomass energy

• The energy comes from burning it

• It becomes biofuel when mixed with gasoline, such as ethonol

Biomass Advantages

• Can be stored and used when needed

• Releases less harmful pollutants than gasoline

• Uses materials that might normally be discarded (including trash!)

• 
  

Biomass Disadvantages

• Growing crops for biofuels requires large amounts of land and pesticides

• Land could be used for food growing

• Pesticides can pollute

Multiple Choice

Biomass is made from burning...

• crops, coal, and oil

• crops, wood, and animal waste

• wood and natural gas

• wood and plastic

Wind

• Wind energy is captured with wind turbines

• The blades turn a generator (located inside the tower), which creates electricity

• Groups of wind turbines are known as wind farms

• Found near farmland, in narrow mountain passes, and even in oceans!

Advantages of Wind

• Can be very efficient and cheap in places with steady winds

• It's clean, no pollutants

Disadvantages of Wind

• Wind is inconsistent

• Not a good source of energy in all locations

• Dangerous for bats and birds

Multiple Choice

People have only been using wind power for the last few decades.

• true

• false

• it depends

Multiple Choice

What is a disadvantage of wind turbines?

• They pollute the air.

• They do not pollute

• They produce noise and may harm some animals

• They are "green" energy

Multiple Choice

What is a wind farm?

• A farm that uses windpower

• Wind turbines grouped together in an area

• A plant that produces energy to move wind turbines

• A farm that produces wind

Multiple Select

Wind power is ... (choose 2)

• energy derived from the wind

• always available

• used to produce electricity

• has no disadvantages

Multiple Choice

What are the following devices called?

• Turbines
• Mills
• Converters
• All of them
  

Hydroelectric

• Energy made by flowing water

• Hydroelectric plants plants are located on large dams, which control the flow of a river

• A controlled amount of water flows through the tunnels and turns huge turbines which generate electricity

Hydroelectric Advantages

• Energy is inexpensive to harness

• Because rivers are everywhere, it's an available resource

• Reliable because engineers control the flow of water

Hydroelectric Disadvantages

• Damming a river causes a great environmental impact for people, plants, and wildlife

• Dependent on rainfall to fill the reservoir

• Expensive to build a dam

Multiple Choice

6. This form of electrical energy generating is called...

• Hydroelectric
• Geothermal
• Wind
• Non-Renewable

Multiple Choice

1. What is it called when you generate electricity with a dam and water?

• Geothermal Energy

• Hydroelectric energy

• Radiation energy

Geothermal

• Heat energy from deep within the earth

• Water is warmed by magma and pumped to the surface

• Geothermal heat pumps create heat for houses and other buildings

• Steam can also be brought to the surface and used to turn a turbine to generate electricity

90% of people in iceland use this as a heat source

Geothermal Advantages

• Clean

• Does not require another fuel source to produce it

• Does not emit any harmful pollutants into the air

Geothermal Disadvantages

• Not a wide spread source of energy

• High installment costs to built power plants

• Not easily transported

Multiple Choice

Geothermal energy is energy

• that is found in caves.

• that has already been used.

• that is found inside the earth.

• found in space.

Solar

• Energy from the sun

• Active solar energy uses technology to capture the sun's rays (solar cells)

• Passive solar energy gets energy from the way sunlight naturally changes throughout the day (A house might face a certain way to capture more of the sun's rays)

Solar Advantages

• Relatively simple technology

• Little maintenance

• Reliable and quiet

• Free energy after purchasing solar panels

Solar Disadvantages

• Energy cannot be created at night

• Cloud cover reduces power

• Works best if at the optimal angle towards the sun

• Only converts 20% of the suns energy to electricity

Multiple Choice

Solar energy only works if you have ___________.

• solar panels

• a tall building

• a lot of land

• live in a hot enviornment

Renewable Energy Resource

Multiple Choice

What is the primary source of most energy on Earth?

• The Sun

• Mars

• The wind

• Plants

Multiple Choice

__________ is an energy resource that WILL NOT run out in the next several hundred years.

• Renewable Energy Resource

• Nonrenewable Energy Resource

• Fossil fuels

• biodegradable

Multiple Choice

What type of energy is created from flowing or moving water usually through a dam.

• hydroelectric

• solar

• geothermal

• biomass

Multiple Choice

Solar energy comes from the

• land.

• moon.

• water.

• wind.

• sun.

Multiple Choice

What type of energy comes from burning plant waste or animal manure?

• nuclear

• geothermal

• coal

• biomass

Renewable Resources Vocabulary

• biomass - energy produced by burning recently living organisms and their waste

• dam - a barrier constructed to hold back water, raise water levels, and create a reservoir

• geothermal - energy that comes from the extreme heat within the earth

• generator - a machine that converts mechanical energy into electrical energy

• hydroelectric - energy from the movement of flowing water

Renewable Resources Vocabulary

• renewable energy resource - a substance that can be used as a source energy, can be replaced quickly, and does not produce a lot of waste

• solar - power produced by harnessing the energy from the suns rays

• solar panel - a panel that absorbs the sun's rays and generates energy for electricity

• turbine - a machine that produces power by turning a wheel or rotor

• wind - power generated by harnessing the energy from the movement of the wind