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Eighth Grade (Grade 8) Earth Science Questions

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Grade 8 Environmental Science
What is ozone?
  1. A form of oxygen
  2. The middle zone of the atmosphere
  3. The coldest layer of the atmosphere
Grade 8 Atmosphere
What is the name of the atmospheric layer labeled B?
Atmosphere Without Text Labels
  1. mesosphere
  2. troposphere
  3. stratosphere
  4. thermosphere
Grade 8 Atmosphere
The gas called ozone is composed of
  1. ozone atoms.
  2. helium atoms.
  3. nitrogen atoms.
  4. oxygen atoms.
Grade 8 Tectonics
Which of the following does evidence indicate is an explanation for plate motion?
  1. convection currents
  2. rift valleys
  3. weather patterns
  4. earthquakes
Grade 8 Tectonics
What was Wegener's idea that the continents slowly moved over Earth's surface?
  1. Pangaea
  2. Continental drift
  3. Plate tectonics
  4. Fossils
Grade 8 Environmental Science
Which cycle most likely includes soil, animal wastes, bacteria, fixation and plant use?
  1. water cycle
  2. carbon cycle
  3. oxygen cycle
  4. nitrogen cycle
Grade 8 Rocks
Which is a nonfoliated metamorphic rock?
  1. limestone
  2. marble
  3. erosion
  4. slate
Grade 8 Tectonics
In diagram shown, what does the letter G best represent?
Subduction Zone
  1. oceanic crust
  2. continental crust
  3. mantle conduction
  4. mantle convection
Grade 8 Volcanoes
Where do most volcanoes occur?
  1. divergent boundary
  2. transform boundary
  3. convergent boundary
Grade 8 Atmosphere
What is a hurricane?
  1. A large funnel that forms from the sky
  2. A lightning storm
  3. A storm that forms at sea and strikes land
  4. An ice blizzard with gusty winds
Grade 8 Earth's Layers
The                 is a rigid layer of earth about 100 km thick.
  1. asthenosphere
  2. lithosphere
  3. mantle
  4. core
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