Solar Energy

Crude oil was down by what percentage between 2001 to 2012?

• 5%

• 7%

• 10%

• 12%

Fill in the blank: The author suggests that making sure prices reflect the _______ and health costs imposed by energy sources could hasten the rise of renewables.

• environmental

• economic

• social

• political

Which energy source is still partway along the path and taking longer to ascend?

• Coal

• Oil

• Natural Gas

• Modern Renewables

Fill in the blank: The rise from 5 to 50 percent of major energy sources typically takes ___ years.

• 5

• less than 50

• 50-60

• More than 60

How many years did it take for coal to reach 25 percent of the overall market?

• 35 years

• 40 years

• 55 years

• 60 years

Fill in the blank: Modern societies need a reliable, uninterrupted supply of ____.

• coal

• oil

• electricity

• gas

Which of the following is NOT a renewable energy source?

• gas

• biofuels

• solar

• wind

Why can't wind and solar alone supply all of the base load?

• The wind does not always blow, and the sun is down at night.

• They are too expensive.

• They are not environmentally friendly.

• They require too much land.

In countries like Germany, what percentage of demand can wind and solar supply during certain hours?

• None

• A negligible amount

• Roughly half

• All demand

Which type of power plant can be switched on and off quickly?

• Coal

• Nuclear

• Hydroelectric and natural gas-fired

• Solar