Renewable Energy Quiz

What is the estimated percentage of the world's oil that has been consumed?

• 20%

• 80%

• 60%

• 40%

According to present estimates, how long until we run out of oil and gas?

• 50 years

• 100 years

• 20 years

• 80 years

What percentage of our energy needs is currently provided by renewable energy?

• 40%

• 25%

• 13%

• 5%

What is the estimated amount of solar energy that continuously radiates at the Earth?

• 150 quadrillion watts

• 173 quadrillion watts

• 100 quadrillion watts

• 200 quadrillion watts

Where must solar plants be located to maximize efficiency?

• Oceans

• Mountains

• Forests

• Deserts

What is the approximate energy loss of present-day power lines?

• 4-6%

• 2-4%

• 8-10%

• 6-8%

What is the energy density of the best lithium ion batteries compared to gasoline?

• 25 times less

• 20 times less

• 15 times less

• 10 times less

What is the approximate weight of a battery needed to power a cross-Atlantic flight for a jet?

• 1000 tons

• 500 tons

• 100 tons

• 2000 tons

What is the main challenge in converting solar energy into chemical energy?

• Cost

• Location

• Availability

• Efficiency

What is a key factor in the transition towards all-renewable energies?

• Technology

• Creativity

• Politics

• Economics