Layers of the Earth

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Across
  1. 4. A part of the Mechanical Layers of the Earth. It is the plastic-like layer of the mantle below the lithosphere; made of mantle rock that flows very slowly, which allows tectonic plates to move on top of it. It is ductile and weak.
  2. 5. Layers of the Earth divided based on composition (chemistry) that make up (compose) the rock in each layer.
  3. 8. A prefix meaning "middle".
  4. 9. A part of the Mechanical Layers of the Earth. A dense, rigid solid; it has the most extreme temperature and intense pressure.
  5. 10. A prefix meaning "rock".
  6. 11. A part of the Compositional Layer of the Earth. The central part of the earth below the mantle composed of iron and nickel.
  7. 13. A part of the Compositional Layer of the Earth. The layer of solid material between Earth's crust and core. It is almost two-thirds of Earth's mass.
  8. 14. A part of the Compositional Layer of the Earth. The thin and solid outermost layer of the Earth above the mantle. It is only about 1% of Earth's mass.
  9. 15. An elastic wave (P and S waves) in the earth produced by an earthquake or other means. It travels through the Earth's layers and allows us to learn about the properties of each layer.
  10. 17. A layer of Earth's crust made of granite and makes up continents.
  11. 18. A suffix meaning "layer".
Down
  1. 1. A part of the Mechanical Layers of the Earth. The solid, outer layer of the Earth that consists of the crust and upper part of the mantle. It is solid and is divided into tectonic plates.
  2. 2. A prefix meaning "weak".
  3. 3. Circulating currents in the mantle caused by the magma being heated by the core of the Earth. It is a process of heating and rising (increase of density), followed by cooling and falling (decrease of density).
  4. 6. A part of the Mechanical Layers of the Earth. It is dense liquid layer made up of iron and nickel. It surrounds the inner core.
  5. 7. A layer of Earth's crust made of basalt and lies beneath the ocean.
  6. 12. Layers of the Earth divided based on physical structure - state of matter and rigidity, and how a layer reacts to stresses of temperature and pressure.
  7. 16. A part of the Mechanical Layers of the Earth. The strong, lower part of the mantle between the Asthenosphere and the outer core. It is solid due to pressure.