CE 2-3 21

Listening
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Slide 1: Slide
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This lesson contains 13 slides, with interactive quizzes, text slides and 1 video.

Items in this lesson

Listening
Page 134

Slide 1 - Slide

What do you know about energy?

Slide 2 - Mind map

Why don't we use 100% renewable energy?

Slide 3 - Open question

8

Slide 4 - Video

00:21
Approximately how long are fossil fuels going to last (at the present level of consumption)?
A
10 years
B
forever
C
60 years
D
a century

Slide 5 - Quiz

00:39
Which one among the so-called renewable energy technologies (solar, wind, biomass, geothermal, etc.) has the potential for providing most of the energy needed by humanity in the near future?

Slide 6 - Open question

01:51
The sun shines lots of energy towards the earth. Approximately how many times more than our present levels of consumption?
A
10000
B
2
C
100
D
1000000

Slide 7 - Quiz

02:13
if we replaced ALL our present energy needs with solar cells, how much of the surface would need to be covered?
A
1km2
B
10km2
C
1 million km2
D
1 billion km2

Slide 8 - Quiz

03:07
The best areas for large renewable energy power plants are far away from large cities, where energy is mostly needed. Which will be the most convenient approach to solve this problem?

Slide 9 - Open question

03:53
Fueling automotive vehicles in the future will be a major challenge. Which technology is the most promising and why: batteries or synthetic fuels produced with solar energy?

Slide 10 - Open question

04:32
In theory, we could fly a large transatlantic flight by using batteries to power the aircraft. How many tons of batteries should the plane load for such a flight?
A
100
B
10
C
1000
D
1

Slide 11 - Quiz

05:47
At present, fossil fuels constitute our major source of primary energy, yet they are also the cause of large looming problems. Which among them seems the most dangerous one?
A
pollution
B
acid rains
C
climate change
D
depletion and shortages

Slide 12 - Quiz

On your own
Use of english: P136
Vocabulary: P137

Slide 13 - Slide