Can We Rely on Wind and Solar Energy - Prager U

What percentage of the world's energy is provided by solar and wind combined?

• 10%

• 5%

• Less than 2%

• 20%

What is the term used to describe the problem of sunlight and wind being unreliable energy sources?

• Diluteness problem

• Intermittency problem

• Efficiency problem

• Sustainability problem

Which of the following materials is NOT mentioned as necessary for solar power production?

• Silicon

• Phosphorus

• Neodymium

• Titanium dioxide

What is required to store solar and wind energy for future use on a global level?

• Batteries

• Oil tanks

• Gas containers

• No mass-storage system exists

What energy source is primarily used as a backup for solar and wind energy in Germany?

• Natural gas

• Nuclear power

• Coal

• Hydroelectric power

What has happened to utility bills in Germany as a result of switching to renewable energy?

• They have decreased significantly

• They have remained the same

• They have gone up dramatically

• They have become more affordable

What is the primary reason for the lack of solar or wind power plants operating independently?

• High costs of construction

• Lack of government support

• Intermittency and storage issues

• Limited resources for energy production

What is the term used for those who struggle to pay their electricity bills due to high costs?

• Energy equity

• Energy poverty

• Energy efficiency

• Energy sustainability

How does Germany’s energy generation from solar and wind compare to their total energy needs?

• More than 50%

• Less than 10%

• About 25%

• Exactly 30%

According to the speaker, what is a misconception about energy from solar and wind was not emphasized in the video?

• It is completely free

• It is environmentally friendly

• It is always available

• It is a reliable energy source