Lesson 3: Light

Wrapping Up

Conclusion

Over the past few days, you have learned about the special characteristics of light. Review the facts about light in the "Things to Know" section. Be sure you understand the difference between light colors and paint colors. Can you explain the relationship between light and other objects, whether they absorb, reflect, or refract light?

Questions to Discuss

  • How are rainbows made? (When white light is split up, a rainbow of colors is formed. Rainbows in the sky are made when white light is split into colors by water drops.)
  • How are paint (pigment) colors and light colors different? (The primary colors of each are different. Light's primary colors are red, blue, and green. The primary colors of paint or pigment are red, yellow, and blue. When all the colors of light are combined, they make white. When the colors of pigment are combined, they make black.)
  • What is the difference between reflection and absorption? (Reflection is light bouncing off an object, and absorption is light being absorbed by an object.)
  • What is refraction? (The bending of light as it travels through a transparent surface.)

Things to Review

Go over the steps of the scientific method with your child. Review the difference between reflection and absorption of light. Review the colors made when light is mixed: cyan, magenta, and yellow. Discuss that light travels in a straight line, and when a light is blocked, shadows form.