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Earth Science

Ivy TEch Mid Term

QuestionAnswer
This igneous texture is characterized by two distinctively different crystal sizes. porphyritic
Isotopes of the same element have the same mass number. False
Which pair of minerals is most common in detrital sedimentary rocks? clay and quartz
Which of the following is NOT one of the eight most common elements in Earth's crust? carbon
What element is the most abundant in the Earth's crust by weight? oxygen
Intrusive rocks none of these
As the rate of cooling increases, the size of the crystals that form decreases
Olivine and quartz are commonly found together in the same rock. False
Evaporites have a biochemical origin. false
The strong tendency of certain minerals to break along smooth, parallel planes is known as cleavage
Quartz is quite resistant to weathering and is an important component of sands in riverbeds and on beaches. true
All atoms of the same element have the same atomic number. true
Glassy igneous rocks form when magma cools so slowly that mineral crystals cannot grow. false
Sedimentary rocks all of these
The most abundant chemical sedimentary rock is limestone
Which group of minerals are the most abundant in the Earth's crust? silicates
One magma can produce several different igneous rocks having different mineral compositions True
Which of the following best defines a mineral and a rock? in a mineral the constituent atoms are bonded in a regular, repetitive, internal structure; a rock is a lithified or consolidated aggregate of different mineral grains
The primary agent of contact metamorphism is heat
Which of the following minerals is a silicate? feldspar
Most limestone has a biochemical origin. true
The most unreliable (variable) diagnostic property of minerals such as quartz is color
Detrital sedimentary rocks are classified (named) primarily on the basis of particle size
Atoms of the same element, zinc for example, have the same number of protons in the nucleus
Select the coarse-grained rock which is composed mainly of quartz and potassium feldspar from the list below. granite
Which of these factors influence the type and rate of weathering? all of these
Metamorphism can affect only sedimentary rocks. false
All atoms of the same element have the same atomic number. true
Rocks are aggregates of one or more minerals. true
Metamorphism may result from all of these
The resistance of a mineral to abrasion is known as hardness
All silicate minerals contain which two elements? silicon, oxygen
In the silicon-oxygen tetrahedron there are more silicon atoms than oxygen atoms. false
Which the following denotes the positively charged particles in an atom's nucleus? protons
Electrically neutral atoms have equal numbers of electrons and protons. true
Most minerals have a higher specific gravity than water. true
Metamorphism is commonly associated with mountain building. true
An atom's mass number is 13 and its atomic number is 6. How many neutrons are in its nucleus? 7
Which one of the following is NOT true about mechanical weathering? does not affect metamorphic rocks
All minerals exhibit cleavage. false
A mineral can be composed entirely of one element. true
Atoms that have an electrical charge due to a gain or loss of electrons are called ions
is a strong, parallel alignment of different mineral bands in a metamorphic rock. Foliation
Which one of the following is not true for minerals? they can be a liquid, solid, or glass
Which one of the following is an igneous rock? rhyolite
Which of the following is correct for isotopes of the same element? the atoms have different numbers of neutrons and the same number of protons
Detrital sediments would predominate in all of the following environments except salt flat
Which of the following best describes bedded gypsum and rock salt? evaporites; chemical, sedimentary rocks
The ion at the center of a silicon-oxygen tetrahedron is surrounded by 4 oxygen ions
Created by: remharri
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