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ESC1000 Ch1-4
Foundations of Earth Science Chapters 1-4
Question | Answer |
---|---|
Any naturally occurring inorganic solid that possesses an orderly crystalline structure and definite chemical composition. | Mineral |
Any solid mass of mineral, or mineral-like matter that occurs naturally as part of our planet. | Rock |
If you take the atom apart, you will find it consists of three subatomic particles. These particles are: | Electrons,Protons, & Neutron. |
What does the atomic number indicate? | The number of protons that element has. |
ions are held together by the attraction of the positive and negative charges. | Ionic bonds |
Two atoms share electrons | Covalent bonds |
The sharing of electrons in metals such as gold, copper, iron, etc. | Metallic bonds |
List Properties of Minerals | Luster, Ability to Transmit Light Color, Streak, Crystal Shape, Tenacity, & Hardness Cleavage Fracture Specific gravity |
The earth's storehouse of useful minerals that can be recovered for use. | Mineral Resource |
Resources include already identified deposits from which minerals can be extracted profitable, called.... | Reserves |
Useful organic material that can be mined for profit. | Ore |
The mass number of an atom is obtained by totaling the number of ___________. | protons and neutrons |
A well-tested and widely accepted view that explains certain observable facts is known as a(n) __________. | Theory |
T/F One of the most reliable diagnostic physical properties of minerals is color. | False |
The tendency of a mineral to break along planes of weak bonding is called ________. | cleavage |
Atomic particles called _______ have a positive charge, whereas ______ have negative charges. | protons, electrons |
Which one of the following is NOT a physical property of minerals? A) hardness B) cleavage C) luster D) streak E) chemical composition | E) chemical composition |
Variations of the same element, but different mass numbers, are called ___________. | isotopes |
When an atom combines chemically with another atom, it either gains, loses, or shares ____________. | Electrons |
Molten material found within Earth is called ________. | Magma |
What are the process of mechanical weathering? | frost wedging, sheeting, & Biological activity |
Sedimentary rocks are ___________. | layered, or bedded |
The term lithification means | "conversion into rock" |
_________ is magma at Earths surface, except that most of the ________ component has escaped. | lava, gas |
What is the most important agent of chemical weathering | Water |
Igneous rock is formed _______. | by crystallization of molten rock |
Exfoliated domes consist of _______. | igneous rock |
The single most important agent sculpturing Earth's land surface is | Running Water |
The ability of a stream to erode is directly related to its | velocity |
The lowest level to which a stream can erode its channel is the stream's | base level |
When a stream slows down, its competence is reduced and sediment begins to be | deposited |
_______________ represents the largest reservoir of freshwater that is readily available to humans | ground water |
The drop in elevation of a stream divided by the distance the water travels. | stream gradient |
The world's largest river in terms of discharge is the __________. | Amazon |
When ice accumulation equals ice wastage, the front of the glacier will __________. | remain stationary |
What is deposited directly by a glacier? | Till |
ost of the erosional work in deserts is accomplished by _________. | Running Water |
T/F Most desert streams carry water only in response to specific episodes of rainfall. | True |
Where is the worlds largest ice sheet located today? | Antarctica |
During the most recent ice age, glaciers covered about _______ percent of Earth's land area. | 30 |
Which process occurs where a glacier enters the sea? | Calving |
T/F The Colorado River is an example of a large wash. | False |
A _______ forms when a block of ice is buried in drift and subsequently melts creating a pit. | Kettle |