Layers of the Earth -- 4th Grade Science

Watch the video above to get you started.  When you finish, read about the layers of the earth to complete your project for this week.  Project -----> Science Diagrams

This link breaks down the layers of the earth in a method that is easy to understand.  Science for kids.
KidsGeo has cool interactive features and reading to teach you about this topic.
Try out ScienceMonster for a page by page lesson followed by a quiz.