Earth Layers

What’s inside

• Which Earth layer is composed primarily of solid iron and nickel?
• Why does the outer core generate Earth's magnetic field?
• Which statement best distinguishes the lithosphere from the asthenosphere?
• What seismic boundary separates the crust from the mantle?
• The rigid layer made of Earth's crust and the uppermost mantle is called the [____].
• The boundary between Earth's mantle and outer core is known as the [____] discontinuity.
• Because S-waves cannot travel through liquids, their absence beyond a certain region helped reveal that the outer core…
• The boundary separating Earth's outer core from its inner core is called the [____] discontinuity.