Q:

What is a good science project on Earth's layers?

A:

Making a cutaway-model of the Earth’s layers is a fine science project for lower elementary school students who are not usually restricted to experiment-centered projects. Making a model of the Earth’s layers is an educational and visually impressive project. There are a variety of materials, techniques and approaches that will work, but most feature differently colored materials to represent the various layers of the planet.

The Earth has four primary layers. All of the various organisms that live on Earth do so on the crust, the thinnest of the four layers. Immediately inside the crust, the 1,800-mile-thick layer of semi-solid rock called the mantle separates the crust from the planet’s core. The Earth’s core is divided into two parts, called the outer core and the inner core. The outer core is molten rock, while the inner core is a solid, dense lump of iron.

These layers can be portrayed for a science project by using different materials to represent each of the four layers. For example, a red lump of clay may represent the inner core, while a layer or yellow clay around it can represent the outer core, followed by a blue layer for the mantle and a brown layer for the crust.

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Related Questions

  • Q:

    What is the Earth's lower mantle made of?

    A:

    Earth's lower mantle is made up of mantle-crust that consists of aluminum, silicon, magnesium, calcium, oxygen and iron. These elements in the lower mantle account for 72.9 percent of the entire mass of the Earth's mantle and about 50 percent of the planets entire mass. The lower mantle is directly underneath Earth's upper mantle and stretches from 416.319 to 1809.976 miles below the surface.

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  • Q:

    Where does most of our knowledge about Earth's interior come from?

    A:

    The main way that scientists have been able to determine the makeup of the interior of the Earth is by studying how seismic waves pass through its various layers. In addition, they have also made theories about the composition of the core of the Earth by studying its magnetic fields.

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  • Q:

    What happens at a subduction zone?

    A:

    Earthquakes and volcanoes, also known as geohazards, are two examples of what can happen at a subduction zone. The geohazards are caused when an oceanic plate slides under a continental plate or another oceanic plate. This process is called subduction.

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  • Q:

    What is the temperature of the continental crust?

    A:

    The temperature of the continental crust varies depending on location and depth; at the surface, the continental crust exists at the same temperature as the outside air, while its inner core reaches temperatures up to 1600 degrees Fahrenheit. The continental crust consists of many levels, and exists on land and underneath the ocean. The top layer of the crust below the ocean floor typically experiences cooler temperatures than the crust forming the ground on land masses, but both have hot inner cores.

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