How We Know About the Earth's Core

The big question is, how do we know about the composition of the earth's core? Sal explains that at 105 degrees from the source point of an earthquake the phenomena of p wave shadow zone leads us to conclude that the waves are traveling through different densities and types of material. The mantle, the crust, and the core of our planet are discussed.

Concepts

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the earth's mantle, the earth's layers, p waves, s waves, waves

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Additional Tags

p wave shadow, core, mantle, waves, p waves, s waves, science

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Resource Details

Grade

8th - 11th

Subjects

Science

2 more...

Resource Type

Instructional Videos

Media Length

5:59

Audiences

For Teacher Use

1 more...

Instructional Strategy

Flipped Classroom

Accessibility

Closed Captions

Usage Permissions

Creative Commons

BY-NC-SA: 3.0