CHANGING THE FACES OF THE EARTH

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Across
  1. 4. Does not have a definite chemical composition.
  2. 5. The material ejected through the volcano can be in the form of solid rocks or cinder, molten rock material or MAGMA.
  3. 6. Has a definite chemical composition; minerals are inorganic compounds.
  4. 12. science of study of the earthquakes.
  5. 13. The process of transformation of the rock from one form to another is known as the.
  6. 15. is any naturally occurring solid mass or aggregate of minerals.
  7. 17. Tremors and vibrations in the earth’s crust is called.
Down
  1. 1. point on the earth’s surface vertically above the focus point.
  2. 2. is the molten rock expelled by a volcano during an eruption. The resulting rock after solidification and cooling is also calledlava
  3. 3. The upper part of the vent is often a cup or a saucer shaped depression, called the crater of the volcano.
  4. 7. instrument used to measure the intensity of an earthquake.
  5. 8. point from where the earthquake tremors originate.
  6. 9. intensity of the tremors caused by the earthquake is measured on .
  7. 10. –Sometimes the material from the interior of the earth is ejected to the surface through a long crack like opening.
  8. 11. are cone shaped mountains with openings in the earth’s crust through which molten lava comes out.
  9. 14. The narrow opening of a volcano is called a.
  10. 16. Rocks form the Earth's outer solid layer.