How is the Earth like an onion? In this video from PBS Digital Studios, viewers first learn the different layers of Earth and their properties. In addition, they hear how these layers came about, starting with the Big Bang theory and the formation of the planets.

Concepts

the earth's layers, the earth's crust, the earth's mantle, the earth's outer core, the big bang theory, density, the lithosphere, the asthenosphere, the mesosphere

Show More Show Less

Additional Tags

science

Show More Show Less

Instructional Ideas

• Use the video to introduce Earth's layers
• Perform a density experiment like the one in the beginning of the video

Classroom Considerations

• It would be helpful if learners have some knowledge of the subject material, as the video covers a lot of material

• This video is hosted on YouTube

Pros

• Diagrams show differences between the mechanical and chemical layers of the earth
• Simple explanations with interesting graphics promote learning

Cons

• None