BJU Press Earth Science Chapter 10

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

what are two properties that help classify metamorphic rocks?

A somewhat soft rock with flaky layers or bands of minerals

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

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

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

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

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

a rock formed from solidified magma or lava

A dense rock containing distorted fossils

metamorphism caused mainly by high-temperature magma or lava

metamorphism that occurred when conditions rapidly changed in rocks

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

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

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

A rock made almost entirely of fossil shells loosely cemented together

The classification and identification of rocks is called mineralogy.

Halite probably precipitated from very salty seawater.

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

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

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

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

What kind of igneous rock looks like black broken glass?

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

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

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

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

A hard rock with large, interlocking mineral crystals.

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

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

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

Length of time is not an important agent of metamorphism

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

The Himalayas are probably a zone of regional metamorphism occurring today

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

 a rock made from the eroded fragments of other rocks

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

a rock made of sediments produced by erosion or chemical precipitation

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