Question

complete the paragraph. each word is used only once. imagine that you have a red marble, and you wrap a layer of yellow clay around the marble to make a larger ball. then, you wrap twice as much orange clay around the yellow layer to make an even bigger ball. over this orange clay ball you spread a very thin layer of green and blue clay. this model would represent the layers of earth. at earths center is a metallic select one. the red marble in this model is the select one, which is made of solid iron measuring about 6,000°c. the yellow clay around the marble represents the select one, which is hot, melted iron and nickel. outside the core is earths thickest layer (represented by the orange clay) called the select one. this layer is rock, part of which is melted to a plastic consistency and flows slowly. the outside surface of earth, represented by the green and blue clay layer, contains the land we walk on and all the oceans (including the ocean floors). this layer is called the select one. together these layers compose the geosphere.

Explanation:

This question tests knowledge of Earth's internal layers, matching a clay model to each structural layer. Each layer has distinct composition and properties:

1. Earth's center is a metallic core overall.
2. The red marble is the solid inner core (solid iron, high temp).
3. Yellow clay is the liquid outer core (melted iron/nickel).
4. Orange clay is the thick mantle (plastic, slow-flowing rock).
5. Thin green/blue clay is the crust (land + ocean floors).

Answer:

1. At Earth's center is a metallic core.
2. The red marble in this model is the inner core, which is made of solid iron measuring about 6,000°C.
3. The yellow clay around the marble represents the outer core, which is hot, melted iron and nickel.
4. Outside the core is Earth's thickest layer (represented by the orange clay) called the mantle.
5. This layer is called the crust.