Science

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  • Not to Scale
  • The Outer Core
  • Other Layers
  • Inner Core
  • Outer Core
  • Not to Scale
  • The Outer Core
  • Inner Core
  • Other Layers
  • Outer Core
  • Scientists have also discovered through earthquake waves that the Earth’s magnetic field is created by the inner core not being rigidly attached to the rest of Earth and spinning faster than it.
  • When this happens, the inner core pushes molten iron into the outer core. A magnetic field around Earth is then created by the flow of molten, magnetic iron in the outer core.
  • Main layers of the Eath and their densities (going down)
  • Crust
  • Mantle Average Density: 4.4 grams per cubic centimeter
  • The outer core is the liquid area between the mantle and the inner core. The outer core is composed of iron, which has a relatively low melting point. Thus being, the outer core flows as a liquid.
  • During the formation of Earth, thermal energy affected different parts of earth in different ways . When it caused earth's solid particles to start flowing, different parts of earth developed different densities. The different materials in earth formed layers according to their densities. The density of an object is the amount of mass per unit volume of it.
  • Main layers of the Eath and their densities (going down)
  • Crust
  • Mantle Average Density: 4.4 grams per cubic centimeter
  • The inner core is a dense ball of solid iron crystals in the center of the Earth. It is solid despite the extreme heat because of the pressure put upon it. It is the densest and hottest layer of the Earth.
  • Since the average densities of each layer increases with depth, it can be seen that pressure increases with depth.
  • Main layers of the Eath and their temperatures (going down)
  • Crust Average Temperature: 300* F
  • Mantle Average Temperature: 2250* F
  • The magnetic field is crucial to life on Earth. The outside layer of the magnetic field, the magnetosphere, protects the planet from harmful space rays.
  • These increasing temperatures are due to increased pressure.
  • Outer Core Average Density:11.1 grams per cubic centimeter
  • Inner Core Average Density:13 grams per cubic centimeter
  • Because Earth has a stronger gravitational force, the force that every object exerts on other objects because of their masses, to a denser object and a less-prominent attraction to a less-dense object, during the time when Earth was molten,the densest materials sank and formed the innermost layer of the earth and the less dense materials stayed at the surface while the intermediate-density materials cover the middle layers.
  • Outer Core Average Density:11.1 grams per cubic centimeter
  • Inner Core Average Density:13 grams per cubic centimeter
  • The pressure on each layer also increases with depth This is because the weight of the layers above the layer increases. Pressure can be seen with density because high pressure squeezes the rocks and makes them much more dense than surface rocks.
  • Outer Core Average Temperature: 9032*F
  • Inner Core Average Temperature: 10832* F
  • Temperaturealso increases with depth. This is visible even just a little bit into the crust. For example, just 3.9 km into the ground, the temperature rises to 127 degrees fahrenheit.
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