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Eighth Grade (Grade 8) Earth Science Questions

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Grade 8 Tectonics
Tectonic plates move approximately this far each year.
  1. one foot
  2. one inch
  3. one yard
Grade 8 Environmental Science
One possible result of more carbon dioxide in the atmosphere is
  1. more nitrogen in the nitrogen cycle.
  2. more carnivores in an area.
  3. increase in rainfall in a region.
  4. increase in average atmospheric temperature.
Grade 8 Oceanography and Hydrology
What is NOT a part of the water cycle?
  1. condensation
  2. evaporation
  3. transpiration
  4. bacteria
Grade 8 Soil
Which lists the soil particles from largest to smallest?
  1. sand, gravel, clay, silt
  2. gravel, silt, sand, clay
  3. gravel, sand, silt, clay
  4. gravel, clay, sand, silt
Grade 8 Oceanography and Hydrology
The process of a                 changing into a                 is called evaporation.
  1. gas; liquid
  2. liquid; solid
  3. liquid; gas
  4. gas; solid
Grade 8 Rocks
These types of rocks are formed from magma.
  1. igneous
  2. sedimentary
  3. metamorphic
Grade 8 Historical Geology
Order the divisions of geological time from the longest to the shortest.
  1. epochs, periods, eras, eons
  2. eons, epochs, eras, periods
  3. periods, epochs, eras, eons
  4. eons, eras, periods, epochs
Grade 8 Environmental Science
Which of the following is NOT an alternative energy resource?
  1. fossil fuels
  2. geothermal energy
  3. solar energy
  4. hydroelectric energy
Grade 8 Earth's Layers
Earth's inner core is composed of mainly of                      .
  1. molten rock
  2. solid iron and nickel
  3. heated gases
  4. none of these
Grade 8 Atmosphere
Why does atmospheric temperature increase with altitude in the stratosphere?
  1. because it is closer to the Sun
  2. because is it less dense than the troposphere
  3. because it is under a lot of pressure
  4. because of the presence of the ozone layer
Grade 8 Soil
What determines a soil's texture?
  1. water content.
  2. mineral composition.
  3. thickness.
  4. particle sizes.
Grade 8 Tectonics
New ocean crust is formed at
  1. divergent boundaries.
  2. convergent boundaries.
  3. continental volcanic arcs.
  4. transform fault boundaries.
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