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Twelfth Grade (Grade 12) Earth Science Questions

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Grade 12 Earth's Layers
Earth's core is made of                    .
  1. carbon and iron
  2. helium and hydrogen
  3. nickel and iron
  4. carbon and helium
Grade 12 Oceanography and Hydrology
What is the name of the cycle that includes the steps: evaporation, condensation, and precipitation?
  1. The Krebs Cycle
  2. The Water Cycle
  3. The Carbon Cycle
  4. The Lunar Cycle
Grade 12 Tectonics
A tectonic plate segment includes
  1. all of the mantle.
  2. the crust and the asthenosphere.
  3. the upper mantle and the crust.
  4. the mantle and the core.
Grade 12 Environmental Science
Grade 12 Tectonics
Many of Earth's strongest earthquakes occur in                     .
  1. spreading centers
  2. subduction zones
  3. divergent boundaries
  4. ocean ridges
Grade 12 Tectonics
Subduction tends to form
  1. gyres.
  2. trenches.
  3. ridges.
  4. plates.
Grade 12 Earth's Layers
Grade 12 Environmental Science
Which is a fossil fuel?
  1. Charcoal
  2. Biodiesel
  3. Crude Oil
  4. Iron
Grade 12 Environmental Science
What frequencies of electromagnetic radiation are absorbed by the ozone layer?
  1. Microwaves
  2. Visible light
  3. Ultraviolet light
  4. Radio waves
Grade 12 Oceanography and Hydrology
What type of glacier is confined by local topography?
  1. Alpine glacier
  2. Continental glacier
  3. Iceberg
  4. Crevasse
Grade 12 Oceanography and Hydrology
Desalination is the process of what?
  1. Removing the salt from ocean and seawater
  2. Adding salt to fresh water
  3. Pumping water from underground aquifers
  4. Purifying water contaminated with pollutants
Grade 12 Atmosphere
The Coriolis effect is mainly a result of Earth’s
  1. rotation.
  2. temperature.
  3. curvature.
  4. gravitation.
  5. tilt.
Grade 12 Tectonics
The plate tectonics theory states that
  1. continental crust "plows through" oceanic crust.
  2. oceanic crust "slides over" continental crust.
  3. lithospheric plates move.
  4. tectonic forces cause the most damage in the center of the plates.
Grade 12 Earth's Layers
Earth's layers, listed from LEAST to MOST dense, are                     .
  1. core, crust, mantle.
  2. core, mantle, crust.
  3. mantle, core, crust.
  4. crust, mantle, core.
Grade 12 Environmental Science
The difference between carbon assimilation and carbon emission is known as what?
  1. Carbon Analysis
  2. Carbon Source
  3. DBH
  4. Net Primary Productivity
Grade 12 Environmental Science
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