Khan Academy
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 phenomenon of the p wave shadow zone leads us to conclude that the waves are...
Khan Academy
Plate Tectonics: Difference Between Crust and Lithosphere, Cosmology and Astronomy
Explore the tectonic plates that make up the surface of our Earth and their movement, as well as the terminology of the Earth's structure.
NPR: National Public Radio
Npr: Fresh Air: James Farmer Jr., Freedom Ride Organizer
Read the background of James Farmer, Jr. and his actions during the Freedom Rides throughout the South in the summer of 1961. Listen to the complete interview he had with Terry Gross on National Public Radio's Fresh Air in 1985 that...
PBS
Pbs Learning Media: Crash Course Astronomy: The Sun
Phil takes us for a closer look at the two-octillion-ton star that rules our solar system. We look at the sun's core, plasma, magnetic fields, sunspots, solar flares, coronal mass ejections, and what all of that means for our planet....
Crash Course
Crash Course Astronomy #10: The Sun
Take a closer look at the two-octillion ton star that rules the solar system. Also, look at the sun's core, plasma, magnetic fields, sunspots, solar flares, coronal mass ejections, and what all of that means for Earth.
Minute Earth
Minute Earth: Why Is It Hot Underground?
Have you ever wondered why there is so much heat inside the Earth? Watch this short tutorial to find out. [2:47]
Other
Earth's Story Journey to the Center of the Earth Full
Earth's Story Journey to the Center Of the Earth HD Full DocumentaryWhat drives the tectonic plates as they glide over the Earth's surface? Scientists have probed our planet to its core. In this realm of unimaginably high temperatures...
Mocomi & Anibrain Digital Technologies
Mocomi: What Are Fiber Optics?
Learn all about the process and uses of the most fascinating technology known as fiber optics [3:59]
Khan Academy
Khan Academy: Plate Tectonics: Difference Between Crust and Lithosphere
Get an introduction to plate tectonics with this video lecture. Video discusses the core, crust, and mantle as well as the difference between the crust and lithosphere [7:59]
Khan Academy
Khan Academy: Plate Tectonics: Compositional and Mechanical Layers of the Earth
Discover plate tectonics and the compositional and mechanical layers of the earth including: Crust, mantle, core, lithosphere, asthenosphere, mesosphere, outer core, inner core
Incorporated Research Institutions for Seismology
Iris: Layers of the Earth
This animation explores the 3 main layers of the Earth and tells how they were discovered, what they are, and how the crust differs from the tectonic (lithospheric) plates. [6:20]
Khan Academy
Khan Academy: How We Know About the Earth's Core
Find out how S-wave shadow and P-wave detection patterns give us information about the Earth's core. [5:49]
Khan Academy
Khan Academy: Plate Tectonics: Structure of the Earth
Explains in more detail the different layers that make up the structure of the Earth. [9:33]
Khan Academy
Khan Academy: Life and Death of Stars: White and Black Dwarfs
A video lecture following the cycle of the star from a main sequence star to either a white or black dwarf. Video reviews what happens in the core of the star as it moves through its life cycle. [12:54]
Incorporated Research Institutions for Seismology
Iris: Layers of the Earth
Earth's interior is broadly grouped into three main layers on the basis of chemical composition: crust, mantle, and core. An egg analogy is used to show relative thicknesses, and a Big Hunk analogy illustrates how a material of a single...