The discovery of thick layers of this led geologists to conclude that the Mediterranean Sea had once dried up.
What is salt?
100
The idea of "trading location for time" is predicated on another idea that this is "the key to the past".
What is the present?
100
Topographic maps are used to indicate changes in this.
What is elevation?
100
The longest era in Earth history.
What is the precambrian?
100
The educated guess in a scientific inquiry.
What is a hypothesis?
200
During the study of the Mediterranean, geologists considered this evidence in the surrounding mountains to be evidence of sea level falling?
What are deep canyons?
200
According to the principle of superposition, this layer is on top.
What is the youngest?
200
Topographic lines that are close together indicate this type of slope.
What is steep?
200
The era in which dinosaurs and other land animals ruled.
What is the Mesozoic?
200
Scientist who derived the hypothesis "Continental Drift".
What is Alfred Wegener?
300
This feature of the layers of salt found below the Meditteranean prompted geologists to concur that the Mediterranean dried up, but had water from the Atlantic ocaasionaly spill its basin before ultimately being refilled.
What is the thickness?
300
If fault C cuts through layer B but not through layer A, this feature is youngest.
What is layer A?
300
The mineral composition of a rock is considered this type of data (quantitative or qualitative).
What is quantitative?
300
The era in which we presently exist, or the one dominated by mammals.
What is the cenozoic?
300
In addition to interlocking continent shapes, and trans-continental fossil evidence, these type of marks left by glacial deposits were also used as evidence for continental drift.
What are scratch marks or striations?
400
When observing a landscape, it best to observe this feature in its enirety, and them focus on smaller parts one part at a time.
What is landscape or roadcut?
400
According to the principle of inclusions, a younger rock can contain pieces of this type of rock.
What is older rock?
400
A volcano observed to be "erupting magma" is considered this type of data (quantitative or qualitative).
What is qualitative?
400
The era which ended with the formation of Pangea, resulting in a mass extinction of marine life forms.
What is the Paleozoic?
400
When evidence of similar species of fossils were found in South America and Africa, an incorrect hypothesis asserted the prescence of this type of "bridge".
What is a land bridge?
500
Geologists first observed the salt beds below the Mediterranean by doing this.
What is drilling holes or taking core samples?
500
As younger magma intrudes into rock layers, it can bake or do this to overlying older rocks.
What is metamorphose?
500
This is a measure of mass in a given volume, and is not affected by the pull fo gravity.
What is density?
500
If Earth history was to be compressed to be within the framework of a year, the arrival of the dinosaurs would occur within which month?
What is December?
500
The failure to provide a mechanism for Continental Drift ended with its dimissal as a hypothesis, but the idea was later rejunivated in the 1950s when this idea "spread" through the field of geology.