Power Surge Video Worksheet Answers

BIOL/ESSC 107

Watch the NOVA documentary Power Surge, which is bachelor online at the PBS spider web site:

http://video.pbs.org/video/1873639434/

Read the content questions before watching the video (which runs near 53 min.). Take notes (also

useful for studying for the examination) while watching, then answer all questions.

1. 30 v million years agone, the CO2 concentration in the atmosphere was much higher

and the climate warmer. What was covering Antarctica at that fourth dimension?

Thirty five meg years agone, Antarctica was covered in forests.

2. By the finish of this century, the CO2 concentration in the temper is predicted to reach a level

similar to

By the end of this century, the COii concentration is predicted to be a similar level to how it was

xxx five million years ago.

3. Explain in ane judgement each, what the iv colors of the forest wedges stand for. full sentences

The green wedge represents efficiency, such as increasing fuel mileage of cars. The Yellow

wedge represents tripling the number of nuclear power plants over 50 years. The blue wedge

represents cleaning coal plants past burial their carbon emissions. The red wedge represents

harnessing the sun's power with solar panels or wind turbines.

4. What kind of carbon-catching device is Klaus Lackner from Columbia Academy

designing? Explain the principle and look of the prototype in 2 full sentences.

Klaus Lackner is designing a device that pulls COii out of the air similar trees. He is cutting a resin-

based textile into sparse strips and hanging them on a wire, like in looks to a Christmas tree

branch, to maximize efficiency in attracting COtwo from the air without using energy.

5. According to the video, fossil fuels currently feed _______% of the commercial energy need

of the globe.

Fossil fuels feed 85% of the commercial energy demand of the world.

half-dozen. Briefly explain the method by which COii is stored past the pilot plant in the Sahara desert and

what scientists do to figure out if the CO2 stays in the ground? Write full sentences.

Carbon sequestration is used to capture the carbon emitted from the power plant and injecting it

dorsum into the basis. To make sure it stays in the footing, scientists calculate the motion of

the ground above the injected carbon, which shows that the carbon is indeed underground.

7. The compost demonstration shows how much carbon is produced by the average American.

How many tons of carbon are produced annually by the average family?

Power Surge Video Worksheet Answers,

Source: https://www.studocu.com/en-us/document/eastern-michigan-university/introduction-to-environmental-science/power-surge-assignment/1791945