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Eighth Grade (Grade 8) Earth Science Questions

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Grade 8 Earth's Layers
Which layer creates the Earth's magnetic field?
  1. lithosphere
  2. mesophere
  3. outer core
  4. inner core
Grade 8 Earth's Layers
What do you call the portion of the mantle just below the lithosphere?
  1. oceanic crust
  2. asthenosphere
  3. plate tectonics
Grade 8 Historical Geology
Geological time periods are divided by                                                .
  1. the appearance and disappearance of life forms.
  2. an equal number of years.
  3. the amount of sediment.
  4. solar changes.
Grade 8 Rocks
What processes can occur in the rock cycle?
  1. heat and pressure
  2. cooling and solidification
  3. weathering and erosion
  4. all of the above
Grade 8 Environmental Science
Which cycle most likely includes photosynthesis, respiration, industrial pollutants, and fossil fuels?
  1. water cycle
  2. carbon cycle
  3. oxygen cycle
  4. nitrogen cycle
Grade 8 Tectonics
This map is most useful for identifying                     .
Tectonic Plates No Labels
  1. biomes
  2. continents
  3. tectonic plates
  4. global wind patterns
Grade 8 Geomorphology
Water, oxygen, carbon dioxide, and acids are significant agents of                      .
  1. chemical weathering
  2. abrasion
  3. mechanical weathering
  4. erosion
Grade 8 Soil
Which of the following statements is TRUE about soils?
  1. The deeper into the soil layers, the more rock appears.
  2. The deeper into the soil layers, the more organic matter.
  3. The more shallow the layer, the greater amount of rock appears.
  4. The deeper the soil layer, the more nutrients.
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 Rocks
Fossils are found mainly in which type of rocks?
  1. igneous
  2. sedimentary
  3. metamorphic
Grade 8 Earth's Layers
Which one of the following is not a layer of Earth?
  1. Core
  2. Crust
  3. Magma
  4. Mantle
Grade 8 Earth Science
The four major areas of Earth Science are
  1. the solid earth, the mountains, the birds, and the universe.
  2. the solid earth, the water and oceans, the atmosphere, and the universe.
  3. the water and oceans, the animals, the plants, and the universe.
  4. the animals, the solid earth, earthquakes, and volcanoes.
Grade 8 Atmosphere
What statement can clearly explain the basic reason for Earth's seasons?
  1. As the Sun moves away from Earth, the seasons will change.
  2. As Earth revolves around the Sun, the seasons change.
  3. As Earth revolves around the Sun, 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.
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