Energy Alternatives and Efficiency Concepts

The video discusses the immense scale of current and future energy demand, emphasizing the need for clean energy to reduce carbon emissions. It highlights the role of energy efficiency and individual actions, such as better insulation and using LED lights, in saving energy and money. The video also explores the impact of coal on energy policy and suggests alternatives like renewable energy and nuclear power, stressing the importance of valuing the atmosphere and considering long-term costs.

What is the projected increase in global energy demand within our lifetimes?

• It will remain the same.

• It will decrease by half.

• It will double.

• It will triple.

Which of the following is an action individuals can take to improve energy efficiency?

• Voting for public utilities commissioners.

• Using more incandescent lights.

• Buying a heavy car.

• Improving home insulation.

What percentage of energy can be saved in an average home by using best practices?

• 70%

• 50%

• 30%

• 10%

What is a common misconception about saving energy?

• It includes using passive solar heating.

• It means insulating homes better.

• It involves using more LED lights.

• It requires giving up personal vehicles.

What is the initial cost comparison between LED and incandescent bulbs?

• Both have the same cost.

• Incandescent bulbs are cheaper.

• LED bulbs are cheaper.

• LED bulbs are free.

What is the primary reason coal is widely used for electricity?

• It is the cheapest source of power.

• It is the most expensive option.

• It is the most sustainable option.

• It is the cleanest energy source.

Which country added a significant amount of coal-fired power in a year?

• Germany

• China

• India

• United States

What is one short-term action to reduce reliance on coal?

• Paying more for renewable energy.

• Increasing fossil fuel consumption.

• Building more coal plants.

• Using more incandescent lights.

What should be considered when evaluating the cost of coal energy?

• Only the immediate financial cost.

• The availability of coal.

• The popularity of coal.

• The environmental impact and long-term costs.

What is a potential alternative to coal for meeting energy demand?

• More incandescent lighting.

• Increased fossil fuel use.

• Nuclear power plants.

• More coal plants.