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Ninth Grade (Grade 9) Earth's Layers Questions

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Grade 9 Earth's Layers
What part of Earth contains rocks?
  1. Biosphere
  2. Hydrosphere
  3. Atmosphere
  4. Lithosphere
Grade 9 Earth's Layers
What is one reason that Earth's core is so hot?
  1. Coal and oil burn in the core.
  2. As heavy elements in the core decay, they produce radioactive heat.
  3. The Sun heats up Earth and causes the inside to melt.
Grade 9 Earth's Layers
The continental crust is mainly composed of                .
  1. basalt
  2. granite
  3. limestone
  4. marble
Grade 9 Earth's Layers
The magnetic field is likely generated by                                                .
  1. the tilt of Earth's rotational axis.
  2. the solar wind.
  3. fluid movements in the outer core.
  4. deformation of the asthenosphere.
  5. a large deposit of magnetite at the North Pole.
Grade 9 Earth's Layers
What is the most abundant element found in the crust?
  1. silicon
  2. carbon
  3. iron
  4. oxygen
Grade 9 Earth's Layers
What is the name of the area where seafloor plate H is moving under continental plate E?
Subduction Zone
  1. Divergent boundary
  2. Subduction Zone
  3. Mid-Ocean Ridge
  4. Rift Valley
Grade 9 Earth's Layers
What is the partially molten layer of Earth called?
  1. the hydrosphere
  2. the asthenosphere
  3. the biosphere
  4. the lithosphere
Grade 9 Earth's Layers
What is the estimated temperature at the Earth's core?
  1. 60 degrees Celsius
  2. 600 degrees Celsius
  3. 6,000 degrees Celsius
  4. 60,000 degrees Celsius
Grade 9 Earth's Layers
What caused Earth to develop layers as it cooled?
  1. differences in density
  2. the magnetic field
  3. escaping gases
  4. the speed of rotation
Grade 9 Earth's Layers
What is the general composition of Earth's oceanic crust?
  1. basalt
  2. granite
  3. shale
  4. gneiss
Grade 9 Earth's Layers
Which of the following layers of Earth is responsible for the magnetic field?
  1. Crust
  2. Upper Mantle
  3. Inner Core
  4. Outer Core
  5. Lower Mantle
Grade 9 Earth's Layers
The type of heat flow that occurs in the mantle is                  .
  1. conduction
  2. convection
  3. radiation
  4. none of the above
Grade 9 Earth's Layers
What is the general composition of the continental crust?
  1. gabbro
  2. granite
  3. basalt
  4. schist
Grade 9 Earth's Layers
Earth is sometimes described as a giant                .
  1. electromagnet
  2. circuit
  3. magnet
  4. compass
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