WorksheetsRocks
Total questions: 22
Worksheet time: 1hrs 22mins
How are igneous rocks formed?
magma cools and crystallizes
sediment builds up into layers
sedimentary layers are distorted by heat and pressure
two or more elements combine to form a pure substance
What is igneous crystal size determined by?
the rate of cooling of the magma
the types of minerals in the magma
the amount of heat and pressure applied to the rocks
the weight of the sediment layers above the rocks
Which of the following are correct concerning this rock?
intrusive
igneous
slow cooling rate
extrusive
metamorphic
Which of the following are correct concerning this rock?
extrusive
igneous
metamorphic
extremely fast cooling rate
intrusive
Which of the following rocks is igneous?
What does rock “texture” refer to?
the size and arrangement of the crystals in the rock
the color of the rock
whether the rocks shows layering or not
the amount of morphism in the rock
What are igneous rocks formed on the surface of the Earth called?
extrusive rocks.
intrusive rocks
lithified rocks
morphed rocks
Explain how sedimentary rocks form.
Sedimentary rocks form from broken-down rocks, which are the products of weathering.
Sedimentary rocks form from cooled and crystallized magma (or lava.)
Sedimentary rocks form from other types of rocks being distorted by heat and pressure.
Sedimentary rocks form from two or more chemical elements bonding together to produce a pure substance.
Which of the following IS NOT a major value of sedimentary rocks?
Sedimentary rocks are used to predict the occurrences of volcanic events, earthquakes, and tsunamis.
Sedimentary rocks are used to reconstruct much of Earth’s history, as they provide clues to past environments.
Sedimentary rocks are of tremendous economic importance because they can contain fossil fuels: coal, oil, natural gas, sources of iron and aluminum.
Sedimentary rocks are used to reconstruct much of Earth’s history, as they provide clues to sediment transport over time.
Which of the following IS NOT a way that sediments can be formed or deposited.
Sediment can be formed by the cooling and crystallization of magma or lava.
Sediment can be formed by the weathering of preexisting rocks, followed by transportation and deposition.
Sediment can be formed by chemical precipitation of minerals from water.
Sediment can be formed by accumulation of biological matter (shells, plant fragments, etc).
What is meant by the term “lithification?”
Lithification is the process whereby sediments that are buried may harden into sedimentary rock.
Lithification is the process whereby rocks are broken down and transported by weathering and erosion.
Lithification is the process whereby rocks are twisted and distorted into another type of rock.
Lithification is the process whereby chemical elements combine to produce minerals.
Detrital sedimentary rocks form:
from the cementation of sediment grains that come from pre-existing rocks, and are classified by grain size, and to a lesser extent by chemical composition.
by the precipitation of minerals from water, and have crystalline textures.
by the melting and recrystallization of magma or lava.
by the distortion of igneous rocks by heat and pressure underground.
Which of the following is a detrital sedimentary rock?
sandstone
limestone
chalk
rock salt
Which of the following is a biological sedimentary rock?
bituminous coal
siltstone
shale
obsidian
What are metamorphic rocks?
rocks that changed their form due to external environmental issues
rocks that are formed from magma or lava
rocks that are formed from the build-up of weathered and eroded materials
rocks that are formed from the bonding of chemical elements into pure substances
Which of the following is the most accurate description of the term "thermal (or contact) metamorphism"?
Thermal metamorphism is a type of metamorphism in which the mineralogy and texture of a body of rock are changed by exposure to the pressure and extreme temperature associated with a body of intruding magma.
Thermal metamorphism is a type of metamorphism in which the mineralogy and texture of rocks are changed over a wide area by deep burial and heating associated with the large-scale forces of plate tectonics.
Thermal metamorphism is a type of metamorphism in which magma cools to form crystals of varying size and color due to differential cooling rates and mineral content.
Thermal metamorphism describes the lithification of sediment layers to form rocks with a layered, or banded appearance.
Which of the following IS NOT a driving agent of metamorphism?
lithification
heat
pressure (stress)
chemically active fluids
Which of the following is a rock that shows low-grade metamorphism?
slate
shale
gneiss
granite
Which of the rocks exhibits a foliated texture?
Which of the sequences correctly lists the rocks in order (L to R) of increasing degrees of morphism?
slate - phyllite - schist - gneiss
schist - phyllite - gneiss - slate
sandstone - siltstone - shale - mudstone
granite - limestone - sandstone - marble
All three types of rocks can be transformed into sediment.
True
False
Which of the following rocks is metamorphic?
