Choose the right or the best answer to the following questions…

Question:

Choose the right or the best answer to the following questions (25 Points; 30 minutes) and shade (color) them in the given box.

  1. The bending of rock without breaking is called
    A. jointing B. folding C. faulting D. fracturing
  2. The vast single continent present about 200 million years ago is called
    A. Pangaea B. Tethys C. Panthalassa D. Gondwana
  3. The process by which a lithospheric plate descends into the mantle is called continental
    A. drift B. sea-floor spreading C. subduction D. faulting
  4. The two most abundant elements in the Earth’s core, by weight, are iron and
    A. nickel B. oxygen and silicon C. carbon and oxygen D. hydrogen and helium
  5. The approximate thickness of the continental crust is about
    A. 2-5 km B. 40-70 km C. 100-200 km D. 2000-3000 km
  6. An atom that has 20 protons and 20 neutrons in its nucleus has this atomic number
    A. 20 B. 40 C.400 D. 10
  7. In which type of chemical bonding are electrons shared between adjacent atoms?
    A. ionic; B. subatomic; C. covalent; D. isotopic
  8. Which of the following igneous rocks exhibit phaneritic texture?
    A. granite, gabbro; B. andesite, rhyolite; C. andesite, diorite; D. rhyolite, gabbro
  9. Explosive volcanic eruptions are likely to occur when the magmas involved are
    A. very low in silica, basic; B. very high in silica, andesitic or rhyolitic.
    C. very hot and fluid; D. very hot and very low in silica.
  10. This type of cone has a very steep slope, small in size and is composed of volcanic material.
    A. composite cones; B. shield cones; C. cinder cones; dome cones rocks that contain many pebbles and gravels are called

Answer:

  1. B) folding
  2. A)PANGAEA
  3. C)SUBDUCTION
  4. B)OXYGEN & SILICON
  5. B)40-70 KM
  6. B)40
  7. C)COVALENT
  8. A)GRANITE, GABBRO
  9. B)Very high in silica, ANDESITIC or RHYOLITIC
  10. C)CINDER CONES

Leave a Comment

Your email address will not be published. Required fields are marked *