An Introduction to Geology > Concept #3 Quiz
we ask a question based upon our observations
when hypotheses pass tests, we should devise additional tests until the hypothesis fails
observations are used to make hypotheses that are required to be testable
all of these
~ 3.8 billion
~ 13 billion
~ 2.0 million
~ 4.5 billion
~ 200 million
a hypothesis that passes a test is considered a fact
hypotheses necessarily allow predictions to be made
hypotheses explain observations, but must be tested for validity
a hypothesis is different from a theory
hypotheses are constructed to explain observations
A hypothesis is a series of observations, and a theory is a model that explains them.
A hypothesis is the same as a theory, just named by different scientists.
A hypothesis is a model that has passed a series of tests, but a theory explains a set of observations.
A hypothesis is developed to explain observations, but a theory is a hypothesis that has passed a series of tests.
A hypothesis is a model that requires testing, but a theory is a fact.
The glacier is shown to be flowing in the downhill direction. At the same time, the glaciers snout (terminus) is shown to be retreating in the uphill direction and the glaciers ice volume is decreasing.
Rocky debris in the valley downhill from the snout was deposited by Noahs flood.
The melting rate of ice in the glacier exceeded the rate at which new snow and ice were added to the glacier.
The glacial hypothesis was finally accepted as scientific theory.
Cooler temperatures meant slower forward glacier flow resulting in snout retreat uphill.