Lesson 4: Heat and the Sun

Wrapping Up

Conclusion

Think about the relationship between the Sun and living things. How are living things dependent on the Sun? In what way are most forms of energy related to the Sun? What if the sun cooled down? How would life on Earth change?

Review the three laws of thermodynamics.

Questions to Discuss

Can you describe the three Laws of Thermodynamics?
Why is solar power an environmentally friendly form of power? (It is renewable and it produces no pollution. Sunlight can also be used to heat homes and water.)
What is renewable energy?

Things to Review

Review the three Laws of Thermodynamics. Review reasons that people continue to research ways to use the Sun for energy.