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Twelfth Grade (Grade 12) Earth's Layers Questions

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Grade 12 Earth's Layers
The most common element in the earth's crust is:
  1. oxygen
  2. carbon
  3. hydrogen
  4. iron
  5. silicon
Grade 12 Earth's Layers
It is hypothesized the Earth's core is made of                    .
  1. carbon and iron
  2. helium and hydrogen
  3. nickel and iron
  4. carbon and helium
Grade 12 Earth's Layers
The two main reasons the Earth's interior is hot are the Earth's natural radioactive decay and
  1. accumulated solar heat
  2. the Earth used to be much closer to the Sun during the Archean
  3. heat from the Earth's original formation
  4. none of the above
Grade 12 Earth's Layers
Grade 12 Earth's Layers
Layers in the mantle are created by variations in strength due to
  1. increasing pressure and temperature with depth
  2. changes in the elements the mantle is composed of
  3. increase in friction with depth
  4. all of the above
Grade 12 Earth's Layers
The Earth's layers, listed from LEAST to MOST dense are                    .
  1. core, crust, mantle
  2. core, mantle, crust
  3. mantle, core, crust
  4. crust, mantle, core
Grade 12 Earth's Layers
The hot springs of Iceland are created due to                                                       .
  1. divergent plate boundaries
  2. absorption of the sun's heat on its dark rock surfaces
  3. plutons
  4. man-made heating units
Grade 12 Earth's Layers
The core of the Earth is made up of                   .
  1. ultramafic rock
  2. iron and nickel
  3. peridotite
  4. basalt and granite
Grade 12 Earth's Layers
Grade 12 Earth's Layers
Grade 12 Earth's Layers
Models of the Earth's interior are based on                               .
  1. body wave behavior
  2. surface wave behavior
  3. magma temperature differential
  4. earthquake intensity
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