Catastrophism
The geologic timescale is represented as a calendar year for easier understanding of the vast span of time. In this representation, the Earth's formation occurs on January 1st and the present day occurs at midnight on December 31st. This compressed timescale helps to comprehend the timeline of Earth's history within a familiar context.
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incomplete dominance
A waterfall occurs when naturally flowing water undergoes an abrupt change in distance above sea level.
Yes, the geologic time scale is typically divided based on major changes in the fossil record, called biostratigraphy. These divisions are used to categorize different periods in Earth's history based on the types of organisms that lived during that time.
Uniformitarianism is a principle that geologic processes that occurred in the past can be explained by current geologic processes. So, it is the idea that the same geologic processes that same Earth today have been at work during all of Earth's history. Catastrophism is a principle that states that geologic change occurs suddenly. Catastrophies include floods, asteroids, earthquakes, etc. Today, modern geology is based on the idea that gradual geologic change is interrupted by catastrophies.
A change step is a change that occurs in a process suddenly, without warning. The change is so drastic from the normal standard that the process needs to be changed to accommodate the difference.
The principle of original horizontality explains why rock layers typically form parallel to each other. This principle states that sedimentary layers are originally deposited in horizontal layers due to gravity, and any significant tilt or folding usually occurs after deposition.
Acute Onset
An earthquake is a geologic event that occurs when tectonic plates are displaced violently. The release of energy along faults in the Earth's crust causes shaking of the ground surface.
The gradualism model of evolution suggests that evolution occurs slowly and continuously over long periods of time through accumulation of small, incremental changes. In contrast, the punctuated equilibrium model proposes that evolution occurs in rapid bursts of change followed by long periods of stasis, with new species appearing suddenly in the fossil record.
The geologic timescale is represented as a calendar year for easier understanding of the vast span of time. In this representation, the Earth's formation occurs on January 1st and the present day occurs at midnight on December 31st. This compressed timescale helps to comprehend the timeline of Earth's history within a familiar context.
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A tsunami can happen if a large volume of water is suddenly displaced by an undersea earthquake.
This difference is an example of continuous change versus discrete change. Continuous change happens gradually and progresses steadily over time, while discrete change occurs suddenly and marks a clear transition point. Height and weight changing gradually is continuous change, while getting a driver's license suddenly marking a new phase in life is discrete change.
incomplete dominance
incomplete dominance