Practice Quiz

MTEL Earth Science Practice Test - Question List

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21.
Economically valuable minerals, such as gold and silver, are often found in the country rock surrounding large plutons. The formation of these types of minerals under these conditions is commonly the result of:
  1. Isostatic readjustment.
  2. Magmatic differentiation.
  3. Hydrothermal alteration.
  4. Chemical weathering.
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22.
Carbon is cycled through the atmosphere, the hydrosphere, the biosphere, and the lithosphere. Which of the following describes one step in the movement of carbon from the atmosphere to the lithosphere?
  1. The production of carbonic acid from limestone during weathering.
  2. The extraction of bicarbonate ions from seawater during coral reef formation.
  3. The formation of carbon dioxide during the decay of biomass.
  4. The absorption of atomic carbon in seawater by deep-ocean sediments.
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23.
Small-scale geothermal heating and cooling systems for individual homes have become popular throughout the United States. These home geothermal systems primarily rely on the:
  1. High temperature of groundwater found deep within Earth.
  2. Compression of steam pumped underground.
  3. Infrared energy given off by soils at night.
  4. Year-round stability of the temperature underground.
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24.
Seismologists first established the physical character of Earth's outer core based on the fact that:
  1. S waves do not pass through liquid substances.
  2. P and S waves are reflected from solids at different angles.
  3. P waves do not pass through high-temperature materials.
  4. P and S waves are refracted differently from irregular surfaces.
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25.
Studies during the 1950s and 1960s showed that the ferromagnetic minerals in ocean-floor basalts aligned with Earth's magnetic field when the basalts were still molten. This information provided evidence supporting:
  1. The theorized stability of Earth's rotational velocity
  2. A four-billion-year-old estimate of Earth's age.
  3. The hypothesized liquid state of the upper mantle.
  4. A mechanism to help explain how lithospheric plates moved apart.
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