Earth Science Help and Reviews

Here you can find study materials for earth science help. Browse the links below to find the area of earth science you're looking for help with. Each study guide comes complete with explanations and practice problems to help you learn earth science.

Study Guides

showing 31 - 40 of 106
  • 31.

    Strata and Land Era Practice Test

    If necessary, review: Strata and Land Eras Help Stratagraphic Record ...

    Source: McGraw-Hill Professional
  • 32.

    Stratigraphic Classification Help

    Stratigraphic Classification The Earth’s crust is constantly changing inside and out. Sedimentation and erosion processes are high for long periods (millions of years) and then something changes and they slow or stop. As we saw with ...

    Source: McGraw-Hill Professional
  • 33.

    Igneous Rock Practice Test

    If necessary, review: Igneous Rocks Help Intrusive Igneous Rocks Help ...

    Source: McGraw-Hill Professional
  • 34.

    Intrusive Igneous Rocks Help

    Intrusive Igneous Rocks The cooled, crystallized magma that forces its way into the surrounding unmelted rock masses deep in the Earth is called intrusive igneous rock . It can be identified by its interlocking large crystals (grains ...

    Source: McGraw-Hill Professional
  • 35.

    Extrusive Igneous Rock Help

    Extrusive Igneous Rock Once magma exits the crust (ejected during an eruption) and cools rapidly, it creates a finely textured or glassy rock with small crystals. Basalt is an example of igneous rock that is quickly cooled from magma and ...

    Source: McGraw-Hill Professional
  • 36.

    Igneous Rock: Felsic and Mafic Help

    Introduction to Felsic and Mafic Rock Igneous rocks are divided into two types depending on composition: felsic and mafic . Felsic rock is affected by heat, either from magma coming to the surface from extreme depths in the ...

    Source: McGraw-Hill Professional
  • 37.

    Crystallization Help

    Crystallization Since most magmas form in the upper mantle, their composition is mostly silica (SiO 2 ) with different amounts of iron, calcium, sodium, potassium, aluminum, magnesium, and other trace elements. The crystallization ...

    Source: McGraw-Hill Professional
  • 38.

    Magnetism Help

    Magnetism Certain minerals, the most important of which is magnetite , can become permanently magnetized. This comes about because the orbiting electrons around a nucleus form an electric current and create a very small magnetic ...

    Source: McGraw-Hill Professional
  • 39.

    Sedimentary Rock Practice Test

    If necessary, review: Sedimentary Rock Formation Help Types of Sedimentary ...

    Source: McGraw-Hill Professional
  • 40.

    Types of Sedimentary Rock Help

    Types Of Sedimentary Rocks Unlike igneous rock, most sedimentary rocks have a fine-grained texture. Since a lot of the reason they have layered or settled in one place is due to water or wind, the particles of sediment are usually small and fine.

    Source: McGraw-Hill Professional
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