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Eighth Grade (Grade 8) Earth Science Questions

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Grade 8 Atmosphere
What statement can clearly explain the basic reason for the Earth's seasons:
  1. As the sun moves away from Earth the seasons will change
  2. As the Earth revolves around the sun, the seasons change
  3. As the Earth revolves around the sun, the Earth's tilt will result in either the northern or southern hemisphere getting more exposure from the direct rays of the sun
  4. none of these are true
Grade 8 Environmental Science
Which of these could help to reduce air pollution?
  1. recycling
  2. mining
  3. burning fossil fuels
  4. driving a car
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 Rocks
Fossils are found mainly in which type of rocks?
  1. igneous
  2. sedimentary
  3. metamorphic
Grade 8 Historical Geology
Scientists determine the absolute age of a fossil by
  1. identifying the kind rock they are found in
  2. studying where it is found
  3. measuring its size and shape
  4. measuring its radioactivity
Grade 8 Environmental Science
To be potable means that the water is
  1. Turbid
  2. Fit to bath in but not to drink
  3. Not fit to drink or to bath in
  4. Fit to drink and use for bathing
Grade 8 Historical Geology
Grade 8 Oceanography and Hydrology
Grade 8 Atmosphere
Grade 8 Tectonics
Grade 8 Tectonics
What measures an Earthquake's magnitude?
  1. Mercalli scale
  2. Interval scale
  3. Richter scale
  4. Ratio scale
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 temperature on Earth
Grade 8 Minerals
How mineral reflects light
  1. Streak
  2. Luster
  3. Color
  4. Fluorescence
Grade 8 Geomorphology
Which of the following does NOT contribute to mechanical weathering?
  1. carbonic acid
  2. frost heaving
  3. plants & animals
  4. pressure release
  5. abrasion
Grade 8 Tectonics
What is the fastest seismic wave?
  1. p-wave
  2. s-wave
  3. surface waves
  4. all the above
Grade 8 Geomorphology
Which featured is formed on dry land?
  1. delta
  2. guyot
  3. seamount
  4. alluvial fan
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