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WorksheetsEvolution Study Guide
Total questions: 20
Worksheet time: 10mins
Which Geologic time period was the longest?
Cenozoic
Mesozoic
Paleozoic
Precambrian
This diagram represents a cross section of rock layers on the Earth's surface. Which statement is best supported by the evidence in the diagram?
The rocks in layer A were deposited before the rocks in layer B.
A long period of erosion occurred before layer B was deposited.
The first layer of rocks to be deposited was layer C
A long period of erosion occurred before rock later A was deposited.
The timeline represents the entire geologic history of the Earth. If point O represents the origin of the earth and point P represents present day, which point would best represent the first appearance of humans on Earth?
Point 1
Point 2
Point 3
Point 4
Review the diagram showing a fault located among layers of sedimentary rock. What is the relative age of the fault?
The fault is older than layer B
The fault is older than layer C..
The fault is older than layer E.
The fault is older than layer F.
Which era does the following globe best represent?
cenozoic
mesozoic
paleozoic
Which era does the following globe represent?
cenozoic
mesozoic
paleozoic
Which era does the following globe represent?
cenozoic
mesozoic
paleozoic
Trilobite fossils from different time periods show small changes in appearance. What might account for the changes?
catastrophic geologic events
weathering and erosion
increase in greenhouse gases
response to environmental changes
Scientists know that trilobites lived in an era earlier than the one in which dinosaurs lived. What information helped the scientists infer this?
There were rock layers that had fossils of both trilobites and dinosaurs.
Fossils of dinosaurs were found below the layers of rock containing fossils of trilobites.
There were more fossils of dinosaurs in the rock layers than fossils of trilobites.
Fossils of trilobites were found below the layers of rock containing fossils of dinosaurs.
model 1
model 2
model 3
model 4
Which explanation best describes why marine fossils have been discovered in rock layers in a desert environment?
A catastrophic event occurred in the area in the past.
Continental drift moved the rock layers from the coast to the desert.
The area was once completely covered by water.
Volcanic activity had once occurred in the area.
A geologist studies two layers of sandstone that exist along opposite coasts of North America. Which characteristic of the layers provides the best evidence that they were deposited about the same time>
particle sizes of the sand in the rock layer
the rock layers' chemical composition
the depth of the rock layers from the surface layer
the fossils found in the rock layer
Scientists found the petrified fossil of a small mink-like animal with a long body and short legs that they claimed lived 40 million years ago. They presumed the animal was a prehistoric ancestor of the modern dog. What should they study to justify their assumptions?
analogous structures between the animal and dogs
location of the fossil and habitat of the dogs
homologous structures between the animal and dogs
feeding habits of the animal as compared to the dogs
A researcher hypothesizes that humans, mice, and bats evolved from a common ancestor. Which evidence supports the researcher's hypothesis?
These three species have homologous structures.
These three species are omnivores.
These three species are multicellular.
These three species have analogous structures.
The diagram shows early embryological stages of a reptile, a bird, and a human. What do the similarities among the embryos suggest?
The organisms have the same genetic structure.
The organisms evolved from a common ancestor.
The organisms appeared on Earth at the same time.
The organisms are adapted to live in similar environments.
By studying fossil records, scientists have concluded that the horses that lived 50 million years ago were much smaller, weaker, and slower than modern horses. Which natural process is responsible for the evolutionary changes that have lead to increased size, strength, and speed in horses?
inbreeding
migration
mutualism
natural selection
The diagram represents fossils found in sedimentary rock in one location. In which of the following most likely environment did the mammoth most likely live?
The environment was cold (ice or snow).
The climate decreased in temperature.
The environment most likely changed from arid or desert to cold (ice or snow).
It became extinct.
The diagram represents fossils found in sedimentary rock in one location. Which statement most likely explains how the climate changed between 220 million and 12 thousand years ago.
The climate increased in temperature.
The climate decreased in temperature.
The environment became covered by water.
The environment became more tropical.
The diagram represents fossils found in sedimentary rock in one location. Which was most likely the effect of the climate change on the environment.
The environment most likely changed from cold to desert.
The environment most likely changed from tropical to tundra.
The environment most likely changed from arid or desert to cold (ice or snow).
The environment most likely changed from arid or desert to tropical.
The diagram represents fossils found in sedimentary rock in one location. Which statement most likely explains what happened to the archaeopteryx as a result of the change in climate.
It adapted and is still a surviving species.
It is now an endangered species.
It became extinct.
