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Eighth Grade (Grade 8) Earth Science Questions

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Grade 8 Tectonics
The theory that Earth's upper mantle and crust is broken into plates that float and move around on the mantle is
  1. continental drift.
  2. seafloor spreading.
  3. plate tectonics.
  4. evolution.
Grade 8 Oceanography and Hydrology
Most tsunamis are caused by which of the following?
  1. meteors
  2. underwater earthquakes
  3. hurricanes
Grade 8 Rocks
Fossils are most likely to be found in which type of rock?
  1. Igneous rocks
  2. Metamorphic rocks
  3. Sedimentary rocks
  4. Any of the above
Grade 8 Atmosphere
Most tornadoes form from                .
  1. thunderstorms
  2. hurricanes
  3. cyclones
Grade 8 Rocks
A classification of metamorphic rocks would include whether they are
  1. chemical or organic.
  2. intrusive or extrusive.
  3. foliated or nonfoliated.
  4. basaltic or granitic.
Grade 8 Atmosphere
Which type of heat transfer occurs when the Sun heats Earth?
  1. convection
  2. conduction
  3. radiation
Grade 8 Atmosphere
Using a resource wisely so that it will not be used up is called
  1. filtration.
  2. conservation.
  3. distillation.
  4. coagulation.
Grade 8 Volcanoes
A newly created volcano is a good example of a                   .
  1. secondary landform
  2. primary landform
  3. special landform
  4. biome
Grade 8 Rocks
Lava that cools quickly forms                       rocks.
  1. extrusive metamorphic
  2. extrusive igneous
  3. intrusive metamorphic
  4. intrusive igneous
Grade 8 Volcanoes
What two things largely help determine the classification of volcanoes?
  1. shape and size
  2. shape and color
  3. shape and composition
  4. shape and texture
Grade 8 Atmosphere
The Maritime Tropical air mass is characterized by
  1. cold and wet air.
  2. warm and wet air.
  3. cold and dry air.
  4. warm and dry air.
Grade 8 Rocks
What are they three types of sedimentary rocks?
  1. lava, magma, and volcano
  2. clastic, chemical, and organic
  3. gypsum, limestone, and shale
  4. contact, regional, and burial
Grade 8 Atmosphere
                is the thin layer of air that surrounds Earth.
  1. An axis
  2. The Moon
  3. The atmosphere
  4. The climate
Grade 8 Oceanography and Hydrology
Earth's surface is about what percentage water?
  1. 60%
  2. 25%
  3. 70%
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