Which type of rock is most closely tied to the process of erosion?

Which of the following would come between deposition and cementation in the formation of a sedimentary rock?

The original rock that was altered to form a metamorphic rock is the _______ rock.

The law of conservation of matter implies that the earth's matter can change in form but not in mass.

Long, thin grains in a rock indicate that something abnormal happened to it during its existence.

Fossils are commonly found in granite.

Igneous rocks do not make the best building materials because they tend to dissolve in acid rain.

Cementation is what turns clastic sediments into nonclastic sediments.

Chalk is an inorganic sedimentary rock.

Metamorphism changes only igneous or sedimentary rocks into metamorphic rocks.

If a geologist observes contact metamorphism in the rock below a horizontal stratum of igneous rock but not in the rick above it, he can assume that he is looking at a surface lava flow rather than a sill intrusion.

Sedimentary rocks are the starting material for most versions of the rock cycle.

You will need to describe how each of the three kinds of rock form...TAKE NOTES on this as it will be on the test:) Check each box as you read and review it.

Rocks are naturally formed solid materials in the earth's crust that usually combinations of _________ and other materials.

The look and feel of a rock is its _____________________.

The crystals and particles in a rock are called _________.

Rocks can be classified as igneous, sedimentary, or metamorphic.

A rock is classified on the basis of how geologists believe it formed and later changed.

Petrologists can't use any of the mineral tests on rocks.

Grains are the key to classifying rocks.

Rhyolite-has no grains visible to the unaided eye

pegmatite-has very large, interlocking crystals

leopardite-a quartz porphyry with large grains set in a very- fine-textured rock

basalt-has no visible grains

obsidian-has a glassy sheen and no visible crystals

phanerite-has small, visible grains about the same size

pumice- a very porous and low-density rock

granite- has small, distinct grains of feldspar, quartz, and mica

gypsum-formed by precipitation from water

conglomerate-containing gravel, pebbles, and stones

halite-having a uniform milky, transparent appearance

breccia-a rock with sharp, broken edges

marble-having extremely small crystals

slate-break into sheets

hornfels-rarely has bands; does does not break

gneiss-has dark and light bands

Most natural processes on Earth are designed to be cyclic.

There is enough time in Earth's history for rock to be recycled by going through the entire rock cycle.

God probably did not originally design the earth to recycle rock.

The only observable process that could return sedimentary rocks to magma is subduction.

No part of the old-earth rock cycle is happening today.