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Sixth Grade (Grade 6) Rocks Questions

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Grade 6 Rocks
Identify the geological processes that would turn sediment into shale, shale into slate, and slate into magma.
  1. Cooling, melting, heat and pressure
  2. Compacting and cementing, heat and pressure, melting
  3. Melting, heat and pressure, cooling
  4. Weathering and erosion, melting, cooling
Grade 6 Rocks
Igneous rocks cannot be formed from
  1. liquid rock.
  2. lava.
  3. magma.
  4. sediments.
Grade 6 Rocks
Which of the following statements describes how a rock changes after it is in a riverbed for a long time?
  1. the rock rapidly breaks into smaller pieces
  2. chunks of the rock break off, and the rock becomes rougher
  3. the edges of the rock are worn away so its surface becomes smoother
  4. the rock absorbs water from the riverbed and becomes softer
Grade 6 Rocks
Which of the following is not an example of an igneous rock?
  1. Basalt
  2. Diorite
  3. Granite
  4. Obsidian
  5. Pumice
  6. Marble
Grade 6 Rocks
How does air chemically weather a rock?
  1. the air molecules are abrasive
  2. air fills cracks in the rock and later expands, causing the cracks to get bigger
  3. the oxygen in the air combines with elements in the rock in a process called oxidation
  4. the rock cracks after absorbing too much oxygen in a process called oxidation
Grade 6 Rocks
When do metamorphic rocks form?
  1. when layers of sediment are deposited
  2. when lava solidifies in seawater
  3. when particles of rock break off at Earth's surface
  4. when heat and pressure change rocks
Grade 6 Rocks
What process occurs to change sedimentary rock into igneous rock?
  1. sediments melted
  2. sediments compacted
  3. sediments weathered
Grade 6 Rocks
Which type of rock can fossils be found in?
  1. sedimentary
  2. igneous
  3. metamorphic
  4. fault
Grade 6 Rocks
Which of the following is NOT one of the three types of rock?
  1. sedimentary
  2. extrusive
  3. metamorphic
  4. igneous
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