Unit 3 (R8-10) Test Review [7th GRADE]Online version
Unit 3 (R8-10) Test Review [7th GRADE]
1
___________________________________are the preserved remains or evidence of ancient living things.
2
The fossils of freshwater animals found on different continents separated by saltwater oceans today was one piece of evidence to support Alfred Wegener's theory of ___________________________.
3
___________________________________is the idea that conditions and organisms on Earth change In quick, violent events. These events could include volcanic eruptions, widespread flooding, or an Asteroid strike
4
The principle of uniformitarianism was pioneered by the the work of _______________, known as the Father of Geology.
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The principle of ________________________________ states that geologic processes that occur today are similar to those that have occurred in the past.
6
Some conditions increase the likeliness that an organism will fossilize upon death. Which of the following would NOT be one of those conditions?
7
Most of the organisms that have lived and died throughout the history of Earth have become fossils.
8
If an organism dies near flowing water, it's chances of becoming a fossil are a little better.
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_______________________________________ include some original biological material from the organism, such as scales, skin, hair, etc.
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A ______________________________is the fossilized carbon outline of an organism or part of an organism
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A __________________ is an impression in a rock left by an ancient organism that forms when sediment around an organism hardens and the organism decays.
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A ____________________ is a fossil copy of an organism made when a mold of an organism is filled in with sediment or mineral deposits.
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Replicas, or copies of organisms can form in the minerals in groundwater. They fill in the pore spaces or replace the dead tissues of organisms.
14
Scientists who study fossils are called__________________________________.
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If you find the fossilized remains of an ancient shark species in Ohio, what can you reasonably infer about Ohio?
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If you find the fossilized remains of an ancient Woolly Mammoth in Mexico, what can you reasonably infer about Mexico?
17
Fossil evidence shows us that Earth has warmed and cooled many times in the past.
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__________________________is the age of rocks and geologic features compared with other rocks and features nearby.
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__________________________is the principle that in undisturbed rock layers, the oldest rocks are on the bottom.
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According to the principle of __________________________________________, most rock-forming materials are deposited in horizontal layers.
21
Another principle of relative-age dating is that sediments are deposited in large, flat sheets. The sheets, or layers, continue in all lateral directions until they thin out or until they meet a barrier, such as the Grand Canyon.
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A piece of an older rock that becomes part of a new rock is called a(n)_____________________________________.
23
According to the_____________________________________________________, if one rock contains pieces of another rock, the rock containing the pieces is younger than the pieces.
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According to the________________________, if one geologic feature cuts across another feature, the feature that it cuts across is older.
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A(n) ________________________________is a surface where rock has eroded away, producing a break, or gap, in the rock record.
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In a(n)________________________________________, younger sedimentary layers are deposited on top of older, horizontal sedimentary layers that have been eroded.
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In a(n)_______________________________________, sedimentary layers are deposited on top of tilted or folded sedimentary layers that have been eroded.
28
In a(n)________________________________________, younger sedimentary layers are deposited on older igneous or metamorphic rock layers that have been eroded.
29
Matching rocks and fossils from separate locations is called ________________________________.
30
___________________represent species that existed on Earth for a short length of time, were abundant, and inhabited many locations. These help geologists infer that the layers in which they are found are of similar age.
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The ______________________________________________ is a system of chronological dating that relates geological strata (stratigraphy) to time.
32
________________________are the longest units of geologic time. Geologic time is divided into four large segments : Hadean, Archean, Proterozoic, and Phanerozoic. These units of measurement usually last around a billion years.
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The _________________________ is the current geologic eon in the geologic time scale, and the one during which abundant animal and plant life has existed. It covers 541 million years to the present, and began with the Cambrian Period.
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Eons are subdivided into smaller units of time called ______________, which generally span around a hundred million years. These are separated by catastrophic extinction boundaries.
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Eras are subdivided into____________________________, tens to one hundred million years in duration. Examples from the Mesozoic Era are the Triassic, Jurassic, and Cretaceous.
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Periods are subdivided into ____________________, tens of millions of years in duration. Currently, we are in the Holocene, which began about 10,000 years ago.
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A __________________________________________________is the extinction of many species on Earth within a short period of time.
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____________________________________states that species change over time as they adapt to their environments.
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___________________________________ is the separation of a population of organisms from the rest of its species due to some physical barrier, such as a mountain range or an ocean. Separated populations of species may evolve in different ways.
40
The sudden appearance of new, complex life-forms around 542 million years ago, during the beginning of the Phanerozoic Eon, is often called the
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Test your knowledge about the 5 seeing habits discussed in the text 'UPS 5 seeing habits'.