1. The sphere of solid nickel and iron at the center of Earth; surrounded by the liquid outer core.

• Outer Core
• Inner Core
• Lithosphere
• Asthenosphere

2. The divisions of the composition of Earth determined by either chemical composition or by the physical state of matter.

• Earth´s Layers
• Earth´s Plates
• Earth´s Currents
• Earth´s Boundaries

3. A characteristic of the material in the asthenosphere; existing in a solid state yet having the ability to flow without being a liquid.

• Composition
• Density
• Plasticity
• Lithosphere

4. The Outer Core is the outer layer of Earth's core; surrounds the inner core and is made of liquid nickel and iron.

• False
• True

5. The solid layer of Earth between the crust and the core; made of dense silicates.

• Continental Crust
• Mantle
• Convection Currents
• Oceanic Crust

6. Motion in a gas or liquid in which the warmer portions rise and the colder portions sink.

• Convection
• Chemical Composition
• Placticity
• Density

7. The elements that make up a substance

• Plasticity
• Chemical composition
• Lava
• Molten

8. Earth´s Crust is The thin, solid outermost layer of Earth; made of less dense silicates and is either continental (landmasses) or oceanic (ocean floors).

• True
• False

9. Characteristics that can be observed or measured; for example, color, melting point, and conductivity.

• Atmosphere
• Asthenosphere
• Lithosphere
• Physical properties

10. The cool, rigid, outermost layer of Earth that consists of the crust and the uppermost part of the mantle; broken into pieces or segments called plates.

• Asthenosphere
• Atmosphere
• Hydrosphere
• Lithosphere