Lecture 17 - Renewable Energy and Sustainability

Question 1

CO2 emissiosn from energy .. since 1980

Answer 1

doubled

Question 2

growth in energy consumption dominated by .. countries

Answer 2

developing

Question 3

renewable energy provides ..% world energy source

traditional biomass ..%, nuclear energy ..%

Answer 3

10%

7. 8
8. 2
   - fossil fuels 79.5%

Question 4

fastest growing sources of RE power capacity are .., .. ,..

Answer 4

Wind power

Hydropower

Photovoltaics (solar energy)

Question 5

global technical potential .. higher than energy demand

but it doesn’t consider .., .. and … considerations

Answer 5

way

costs, barriers and environmental

Question 6

Life cycle analysis takes into account the lifespan from .. to .. of something considered …

Answer 6

production, destruction
renewabe
-may not be worth it if costs too high

Question 7

bioenergy can cause .., … from deforestation

also competes with .. production

Answer 7

land use change
GHG emissions
food

Question 8

direct land use change switches a plot of land from a .. or no use to a biofuel crop production

Answer 8

previous

Question 9

indirect land-use change is the impacts arising elsewhere due to biofuel production

E.g. new … niches

Answer 9

economic

Question 10

kyoto protocol mistakenly counted all bioenergy as .. useful

resulted in CO2 .. from .. ..
leads to net benefit of … migitation to be overcome by .. effects

Answer 10

C
drainage, tropical peatlands
GHG, LUC

Question 11

..% of tropical peatlands belong to Indonesia?

Answer 11

65%

Question 12

C is lost in waterflux from tropical peatlands, is very ..

Answer 12

young

Question 13

What happens when tropical peatlands are drained and degraded? [1]

Answer 13

Ancient C is released, a huge source of emission as it’s ‘newly’ entering the atmosphere.

Question 14

hydropower in brazil is .. and .. .. renewable energy

it substitutes .. based generation, generates .. and increases .. quality via reducing turbidity

Answer 14

reliable, low cost
diesal
employment, water

Question 15

hydropower in brazil may however reduce .. quality
reloacted ..
change … ecosystem structure, reduce species ..
destabilise …
and have climatic alterations on .. and .. scales

Answer 15

water, relocate
aquatic, richness
slopes
local, GHG (aka more global)

Question 16

putting dam in forest can .. it causing .. generation due to anaerobic conditions

resulting in GHG from ..

Answer 16

flood, methane

CH4

Question 17

Reservoirs contribute an estimated ..% to anthropogenic CH4 emissions

Answer 17

20%.

Question 18

traditonal biomass provides ..%

Answer 18

7.8

Question 19

..% of brazils energy from hydropower, yet .. of its potential is untapped
but its in amazon rainforest

Answer 19

> 70%

2/3