BJU Press Earth Science Chapter 10

Length of time is not an important agent of metamorphism

how a rock looks and feels based on the sizes of the mineral grains and other particles that compose the rock

A dense rock containing distorted fossils

A key step in classifying a rock is determining how old it is.

Where in the world would you expect to find the results of regional metamorphism?

 sedimentary rock made of nonclastic erosion sediments and formed from chemical precipitation or deposition of fossils

any process that causes chemical substances dissolved in water to form a solid compound that settles out of solution

a rock formed from solidified magma or lava

a fine-grained igneous rock with crystals too small to see, even with a microscope

Gabbro and basalt are chemically similar.

An igneous rock has large, distinct mineral crystals embedded in fine crystal grains. What kind of texture does it have?

A clast is a fragment of rock or other material cemented into a rock.

what are two properties that help classify metamorphic rocks?

an igneous, sedimentary, or another metamorphic rock that seems to have been physically and chemically changed over time

a rock made of sediments produced by erosion or chemical precipitation

The rock cycle is an example of a process God created to reuse natural resources so that we don’t run out.

a metamorphic rock that doesn't have bands or layers, intends to break into sharp, angular pieces

About how old are the oldest sedimentary rocks according to the Young Earth view?

The bands of colors in foliated metamorphic rocks are normally parallel to the sedimentary strata of the source rock.

The classification and identification of rocks is called mineralogy.

 a rock made from the eroded fragments of other rocks

naturalistic, old Earth idea that rock is recycled just like nearly every other natural resource

a piece of broken or eroded rock that can range in size from microscopic particles to boulder-sized fragments.

Color is not a reliable way to classify rocks

Which of the four steps to form sedimentary rocks do NOT apply to a chemical sedimentary rock?

 pieces and particles of mineral crystals, rock fragments, and even fossils in a rock that determine its texture

A rock containing sharp, broken pieces of other rocks surrounded by cemented sand grains

metamorphic rock containing flattened or flaky mineral crystals, giving it a banded or layered appearance

 a rock composed of chemical precipitates, and is one form of nonclastic sedimentary rock

On the basis of the earth’s design and history, which kind of resource does not seem to be recycled?

Larger igneous mineral crystals mean that the rock cooled more slowly and probably formed deeper in the earth.

metamorphism caused mainly by high-temperature magma or lava

a coarse-grained igneous rock with very large interlocking crystals, and grains larger than 1 inch across

Halite probably precipitated from very salty seawater.

What kind of igneous rock looks like black broken glass?

What physical law assures us that the amount of material in the earth doesn’t change?

A coarse texture applies more to the size and shape of the grains in a rock than to how it feels to the touch.

an igneous rock containing a few large mineral grains embedded in a very fine-textured matrix

an igneous rock composed of distinct mineral grains that are small and more or less the same size

metamorphism that occurred over large areas widespread, regional tectonic forces, heat, or pressure from weight of rocks

A hard rock with large, interlocking mineral crystals.

The Himalayas are probably a zone of regional metamorphism occurring today

A rock made almost entirely of fossil shells loosely cemented together

A somewhat soft rock with flaky layers or bands of minerals

 a solid material in earth’s crust that is a natural combination of minerals or other materials

metamorphism that occurred when conditions rapidly changed in rocks

The main classification difference between siltstone and shale is the way they feel (siltstone is rougher).