This is a Clilstore unit. You can link all words to dictionaries.

Energy. Lesson 3. Energy sources

  Lesson designed by: Alejandro Robles García

 

Activity 13. Check out the previous concepts completing in teams the "Tables of energy sources"  with some cards that you can find in "Energy source cards". Once you have checked the answers glue the cards in the tables. 

Useful phrases/structures  to comunicate

Is this energy source renewable or non-renewable?

Do you think this card belongs to this energy source?

What question does this card answer?

What do you think are the advantages/ disadvantages of this energy source?

 

Activity 14. Read this text about alternative energies and answer the following questions:

Everyday, the world produces carbon dioxide that is released to the earth’s atmosphere and which will still be there in one hundred years time.

This increased content of Carbon Dioxide increases the warmth of our planet and is the main cause of the so called “Global Warming Effect”. One answer to global warming is to replace and retrofit current technologies with alternatives that have comparable or better performance, but do not emit carbon dioxide. We call this Alternate energy.

By 2050, one-third of the world's energy will need to come from solar, wind, and other renewable resources. Who says? British Petroleum and Royal Dutch Shell, two of the world's largest oil companies. Climate change, population growth, and fossil fuel depletion mean that renewables will need to play a bigger role in the future than they do today.

Alternative energy refers to energy sources that have no undesired consequences such for example fossil fuels or nuclear energy. Alternative energy sources are renewable and are thought to be "free" energy sources. They all have lower carbon emissions, compared to conventional energy sources. These include Biomass Energy, Wind Energy, Solar Energy, Geothermal, Hidropower energy  sources. Combined with the use of recycling, the use of clean alternative energies such as the home use of solar power systems will help ensure man's survival into the 21st century and beyond.

1. What is the problem with the increase of carbon dioxide?

2. Why can be useful alternative energies?

3. What are the alternative energies mentiones in the text?

 

Activity 15. Answer this quizz while you watch the video Fusion energy and then disccus in class the answers.

 

1. What we call nuclear power today is:

a)      Nuclear Fission

b)      Nuclear fusion

c)      Both of them

 

2.  Fusion reaction:

a)      Joins particles

b)      Splits particles

c)       It can split and join particles.

 

3. In the sun are produced:

a)      Fusion reactions

b)      Fission reactions

c)       Both

 

4. In Europe, the fusion reactor:

a)      It is open right now.

b)      It will open in 2019

c)       It will be needed a lot of research and years until it is open.

 

5. The fusion reactor uses:

a)      Isotopes of hydrogen turned into plasma ions.

b)      Isotopes of helium turned into plasma ions.

c)       Plasma. It does not matter the  element.

 

6. In the reactor the electromagnets:

a)      They  are a security measure.

b)      They are used to heat the plasma.

c)       Keep plasma from touching  the walls.

 

7. The energy of 6l of water is:

a)      The same than 1 ton of coal

b)      Less than 1 ton of coal.

c)       The same than 1l of oil.

 

8. Fusion energy is:

a)      Safer because it does not need bomb style materials.

b)      As dangerous as nuclear fission.

c)      More dangerous than nuclear fission because it produces more energy.

 

9. The main critic to the fusion reactor is:

a)     It has not been shown any data.

b)     Nobody understands how it works.

c)     It could be dangerous.

 

 

Transcription of the video.

0:00
This Dnews episode is brought to you by Domain Dot Com
0:03
We are less than 20 years away from putting the power of the sun on the back of a truck.
0:08
Just, keep Dr. Octo away from it this time, mmkay?
0:19
What we call, "nuclear power" today is really nuclear fission. Fission involves splitting
0:24
heavy isotopes of uranium or plutonium resulting in radioactive, unstable elements. It's the
0:29
same as a nuclear bomb, except we're harnessing the energy. We can do better! Fusion power,
0:34
takes isotopes of hydrogen and fuses them to create helium. Fusion power is the promise
0:39
of the future! It's what our sun uses to keep alight and humans have been working to create
0:43
fusion for 60 years. Now, this week, a secret project at Lockheed's Advanced Development
0:48
Program called Skunk Works believes they may have solved the riddle… and could have a
0:53
working model in FIVE YEARS.
0:57
Most fusion plans involve a Tokamak toroidal plasma confinement system, I talked about
1:00
one such reactor plan a year ago, check it out. The standard model is a torus chamber
1:05
lined with powerful electromagnets. Torus is a shape… like a… doughnut. Only the
1:10
traditional designs are in excess of 5000 TONS and as huge as a building. A coalition
1:15
of countries is working on one in Europe now, slated to open in 2019. But Lockheed's little
1:21
beauty is supposedly only 10 meters by seven meters. That's big-rig sized!
1:29
Fusion reactions work by turning isotopes of hydrogen into s superheated plasma of ions
1:34
and electrons inside of a torus chamber lined with SUPER powerful electromagnets. The electromagnets
1:39
are there to keep the hot plasma from touching the walls, because if they do, the heat will
1:45
flow from the plasma into the walls of the torus and it won't work. Once the reactor
1:50
gets the plasma hot enough -- hundreds of millions of degrees -- the ions will overcome
1:54
their electrically charged repulsion and smash into each other, fusing and releasing MASSIVE
1:59
amounts of energy with little radioactive waste. The U.S. Department of Energy says
2:03
if we can figure this out, the energy in 6 liters of water will be equal to one TON of
2:09
coal.
2:10
Lockheed says their compact reactor will be ready for military use in 10 years, and personal
2:14
use in 20, with no worries about nuclear proliferation (because fusion doesn't need bomb style materials)
2:20
and will be compact enough to ship anywhere and everywhere… but critics are… well
2:26
critical, or skeptical… both.
2:28
They say they've done 200 firings of the reactor, and the lead researcher at Skunk Works said
2:33
that "it looks like it's doing what it's supposed to do," but no one else, as of yet, has been
2:38
shown any data. Needless to say, without proof, things smell a little off.
2:44
If this DOES work and Lockheed Martin can finally created a stable fusion reaction,
2:48
then the world will be forever changed. In the next 50 years, we could see virtually
2:53
unlimited energy for everyone who needed it and if it's compact enough, airplanes, ships,
2:58
cars and spacecraft that could fly with zero emissions for months or years at a time. It
3:04
could mean the end of fossil fuel pollution and mining. And if the energy is as abundant
3:08
as some fusion models predict, wireless power could be realized…
 
Activity 16. Speaking activity. Answer with a partner the following questions.
 
1. Do you think is it important to invest in renewable energies?  And  nuclear fusion?
 
2. Should we stop using non-renewable energies? 

3. What do you think will be the energy source of future?

4. Do you think it is possible to live in the future in a world with infinite energy? How would be this type of world?

 

Activity 17. Write a text in approximately 100 words about the most important energy source in the future.  You can choose whatever energy source studied in class and you have to explain where it can be found, how it is used, its advantages and disadvantages and why you think it will be important in the future.

Useful phrases/structures to write

In my opinion, the most important energy source in the future will be.... because...

Nowadays, this energy source can be found in... and can be used to...

It has both advantages and disadvantages. The first ones are… while the second ones are…

Other types of energy such as.... and... will be less important because....

 

 

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