Igneous Rocks and Geology 101

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Questions and Answers

Where do igneous rocks come from?

  • They form from the evaporation of water
  • They form from the erosion of sedimentary rocks
  • They form through the compression of metamorphic rocks
  • They form from the cooling and solidifying of magma or lava (correct)

What is magma called when it reaches the surface of the earth?

  • Metamorphism
  • Sediment
  • Lava (correct)
  • Quartz

Where can igneous rocks be found?

  • In the core of the earth
  • At the bottom of the ocean and deep underground (correct)
  • In ice caps at the poles
  • On the surface of the moon

How are tectonic plates described?

<p>Massive sections of Earth's crust that are able to move (A)</p> Signup and view all the answers

What is plate tectonics?

<p>A theory stating that Earth's crust is broken up into plates (A)</p> Signup and view all the answers

What is the name given to magma that reaches the surface of the earth?

<p>Lava (A)</p> Signup and view all the answers

How does igneous rock formation relate to tectonic plate movement?

<p>Igneous rock formation is linked to the movement of tectonic plates (A)</p> Signup and view all the answers

What is responsible for the formation of igneous rocks at the Mid-Atlantic Ridge?

<p>Diverging tectonic plates (C)</p> Signup and view all the answers

In which type of tectonic plate boundary does subduction occur?

<p>Convergent boundary (C)</p> Signup and view all the answers

How does magma reach the surface to form igneous rock at a divergent boundary?

<p>By squeezing up through gaps created by the plates moving apart (A)</p> Signup and view all the answers

What results from the melting of the subducting plate at a convergent boundary?

<p>Formation of igneous rocks (D)</p> Signup and view all the answers

Which geological feature is associated with diverging tectonic plates?

<p>Mid-Atlantic Ridge (C)</p> Signup and view all the answers

What happens when oceanic crust is pushed below continental crust at a convergent boundary?

<p>Formation of deep ocean trench (A)</p> Signup and view all the answers

What happens to the newly melted rock from the subducting plate at a convergent boundary?

<p>It starts to rise toward the surface and solidifies into igneous rock (B)</p> Signup and view all the answers

What type of plate interaction results in extensive volcanic activity and the formation of igneous rocks in the Ring of Fire area?

<p>Oceanic-continental plate interaction (C)</p> Signup and view all the answers

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