#3.14 Aim:

What is biomass energy?

AgendaQOD (10)

Lesson: biomass

(15)

Activity: The

cornulator (15)

Summary

(5)

HW #23

QOD: What energy sources did people use before the discovery

of fossil fuels?

Biomass energy

#3.14 Aim: What is

biomass energy?

#3.14 Aim:

What is biomass energy?

AgendaQOD (10)

Lesson: biomass

(15)

Activity: The

cornulator (15)

Summary

(5)

HW #23

Biomass = plant or animal matter

Biomass energy is stored in wood and other organic materials

#3.14 Aim:

What is biomass energy?

AgendaQOD (10)

Lesson: biomass

(15)

Activity: The

cornulator (15)

Summary

(5)

HW #23

Biomass quick facts

• first energy source used by humans.

• Over 1 billion people use wood as their main energy source.

• It can be burned for heat, electricity, or made into liquid fuel

#3.14 Aim:

What is biomass energy?

AgendaQOD (10)

Lesson: biomass

(15)

Activity: The

cornulator (15)

Summary

(5)

HW #23

Major sources of biomass 1. wood

2. manure

3. crops (ex: corn)

4. crop residues

(ex: corn stalks) and

wastes (ex: sawdust)

Biofuels• Biofuels are fuels that are made

from plant and animal material

• Examples are1. Ethanol

2. Biodiesel

3. Biogas

#3.14 Aim:

What is biomass energy?

AgendaQOD (10)

Lesson: biomass

(15)

Activity: The

cornulator (15)

Summary

(5)

HW #23

Types of Biofuels1. Ethanol – an alcohol that is usually made

from fermented corn, used instead of gasoline or mixed with gasoline

Most of the gasoline that we buy in Gallup is mixed with ethanol.

#3.14 Aim:

What is biomass energy?

AgendaQOD (10)

Lesson: biomass

(15)

Activity: The

cornulator (15)

Summary

(5)

HW #23

Types of Biofuels2. Biodiesel – made by recycling

vegetable oil or cooking grease

Diesel engines can run on biodiesel

Types of Biofuels

Animal waste, food scraps, and garbage decomposein a tank and the methane gas that forms is collectedused to produce heat and electricity.

3. Biogas- a mixture of gases produced by the breakdown of organic matter.

What are the pros and

cons of using

biomass energy?

#3.15 Aim:

What are the pro’s and con’s of using biomass energy?

AgendaQOD (5)

Lesson: pro’s and con’s (15)

Activity: goals(15)

Summary

(10)

HW #24

Pros1. Does not produce any newgreenhousegases.

#3.15 Aim:

What are the pro’s and con’s of using biomass energy?

AgendaQOD (5)

Lesson: pro’s and con’s (15)

Activity: goals(15)

Summary

(10)

HW #24

2.Reduces other greenhouse gas emissions

3. Economic benefits – can be produced all over the country is

made from material that would be thrown away.

– (ex: by recycling landfill gas)

Pros

#3.15 Aim:

What are the pro’s and con’s of using biomass energy?

AgendaQOD (5)

Lesson: pro’s and con’s (15)

Activity: goals(15)

Summary

(10)

HW #24

4. Renewable – recycles wastes

5. Human health – almost no air pollution.

Pros

• 6. Safer to handle than fossil fuels

With biofuels we couldend the terrible oil spillsthat we get with petroleum based fuels

PROS

#3.15 Aim:

What are the pro’s and con’s of using biomass energy?

AgendaQOD (5)

Lesson: pro’s and con’s (15)

Activity: goals(15)

Summary

(10)

HW #24

Cons1. Health hazards – indoor air pollution wood

#3.15 Aim:

What are the pro’s and con’s of using biomass energy?

AgendaQOD (5)

Lesson: pro’s and con’s (15)

Activity: goals(15)

Summary

(10)

HW #24

2. Deforestation CONS

#3.15 Aim:

What are the pro’s and con’s of using biomass energy?

AgendaQOD (5)

Lesson: pro’s and con’s (15)

Activity: goals(15)

Summary

(10)

HW #24

3. Monoculture agriculture-Large farms that grow only one type of crop.

-Growing just one crop to make fuel reduces biodiversity.-When biodiversity does down, the environment suffers.

CONS

#3.15 Aim:

What are the pro’s and con’s of using biomass energy?

AgendaQOD (5)

Lesson: pro’s and con’s (15)

Activity: goals(15)

Summary

(10)

HW #24

4. Inefficient – It takes large amount of energy to produce Ethanol. Tractors, trucks, land, water, fertilizer, human labor etc.

Cons

6. Land that is used to grow fuels is no longer available to grow food. This can cause:

-Food shortages, higher prices for food, and starvation

Check out the signs these protesters are carrying

CONS

What do you think? Should the USA invest in Biofuels

research and try to increase their use?

1. Choose a side, pro or con2. Write a letter to Dr. Ernest Moniz that explains

what you think about biomass energy. Include at least 5 pros or cons in your letter. (Dr. Ernest Moniz is the United States Secretary of Energy. It is his job to decide

how our country will get the energy we need.

USA Secretary of Energy

Dr. Ernest Moniz