Unit 1 Review Question Preview (ID: 27824)


EOG Released Questions--Earth History. TEACHERS: click here for quick copy question ID numbers.

A scientist finds the bones of a dinosaur. What could help the scientist determine the approximate age of the dinosaur bones?
a) the birds living in the area of the bones
b) the weather conditions in the area of the bones
c) the kinds of trees living in the area of the bones
d) the index fossils in the area of the bones

Which best describes how ice cores are important to the study of geologic history?
a) They show unconformities, which signal changes in deposition.
b) They hold index fossils, which are used to date the different ice cores.
c) They contain evidence showing changes in the atmospheric composition over time.
d) They follow the Law of Superposition, which gives reasons for extinctions of species.

Scientists find dinosaur fossils in the bottom rock layers of a cliff and mammal fossils in the middle rock layer of the cliff. Which could best be concluded from this evidence?
a) Dinosaurs ate plants.
b) Dinosaurs were eaten by the mammals.
c) Dinosaurs lived on Earth before the mammals.
d) Dinosaurs and mammals lived at the same time.

Which statement best describes the Law of Superposition?
a) Each sedimentary layer of rock represents 1,000 years of Earth’s age, much like the rings of a tree.
b) In undisturbed layers of sedimentary rock, the upper rock layers are older than the lower rock layers.
c) In undisturbed layers of sedimentary rock, the lowest layers contain the older rocks.
d) Rocks that form near volcanoes are older than surrounding rock.

What do earthquakes tell scientists about the history of the planet?
a) Earth’s climate is constantly changing.
b) The continents of Earth are continually moving.
c) Dinosaurs became extinct about 65 million years ago.
d) The oceans are much deeper today than millions years ago.

How do scientists know that some mountains were once at the bottom of an ocean?
a) Freshwater rivers flow to the ocean.
b) Saltwater fish are found in some mountain streams.
c) Dinosaur bones have been discovered in the mountains.
d) Marine fossils have been found on the peaks of some mountains.

Which type of rock forms from the cooling of lava?
a) Igneous
b) Limestone
c) Sandstone
d) Metamorphic

Which method provides the most accurate age of a rock sample?
a) Superposition
b) Relative dating
c) Radioactive dating
d) Index fossil identification

Which is a process that allows scientists to compare rock layers with others in a sequence to determine their age?
a) radiometric dating
b) absolute dating
c) relative dating
d) cast and mold fossils

Which characteristics of carbon-14 dating helps scientists determine the approximate time a species became extinct?
a) Carbon-14 is not present in more recent fossils.
b) Carbon -14 increases at a constant rate over time.
c) Carbon-14 decreases at a constant rate over time.
d) Carbon-14 can only be found in fossils of a certain period.

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