Earth Science Chapter 10 - Rocks

A _______ is a scientist who studies the classification and origin of all types of rocks.

• mineralogist

• pedologist

• petrologist

• sedimentologist

The individual rock particles, crystals, and sometimes fossils that combine to give a rock its texture are known as

• grains

• nuggets

• sediments

• source rocks

Many young-earth geologists think that the basement rocks created on the third day of Creation were probably

• igneous rocks.

• metamorphic rocks.

• sedimentary rocks.

• both igneous and metamorphic rocks.

Which of these contains the largest crystals, usually interlocking?

• pegmatite

• phanerite

• porphyry

• pumice

_____ is a type of rock that is often light enough to float in water.

• Flint

• Marble

• Pumice

• Sandstone

______ is a type of rock that is so smooth and shiny that it is called volcanic glass.

• Andesite

• Basalt

• Obsidian

• Schist

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

• igneous

• metamorphic

• sedimentary

• none of these

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

• compaction

• erosion

• precipitation

• pumice

Which of the following does not belong with the other three?

• clay

• magma

• pebbles

• sand

Rocks formed from minerals precipitated from water are

• clastic sedimentary rocks.

• hydrolithic rocks.

• nonclastic sedimentary rocks.

• precipital rocks.