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- 1. Multiple ChoiceWhich is used in radioactive dating?carbon-14index fossilshydrochloric acidlaw of superposition
- 2. Multiple Choice
What does the fossil record best support?
the Theory of Biological Evolution
the Law of Superposition
the Theory of Geological Evolution
Newton's 1st Law
- 3. Multiple ChoiceWhat do earthquakes tell scientists about the history of the planet?earth’s climate is constantly changing.the continents of Earth are continually moving.Dinosaurs became extinct about 65 million years ago.The oceans are much deeper today than millions of years ago.
- 4. Multiple Choice
Which idea does evidence found in sedimentary rocks best support?
most organisms from Earth's history still exist.
Organisms have not changed significantly over time.
All organisms from Earth's history have become extinct.
organisms have evolved from simple to complex forms.
- 5. Multiple ChoiceWhere is evidence most often found to represent a record of Earth's history?air, lava, and fossilswater, air, and rockslava, water, and ice coresrocks, fossils, and ice cores
- 6. Multiple ChoiceWhich is the best predictor of the relative age of a layer of rock?thickness of the layerposition of the layerlength of the layersize of the layer
- 7. Multiple ChoiceWhich process most likely accounts for the major increase in atmospheric carbon dioxide over time?increased deforestationdecreased deforestationincreased use of fossil fuelsdecreased use of fossil fuels
- 8. Multiple ChoiceA geologist found 600-year-old sediments below a particular rock layer. Which will the geologist most likely find above the rock layer?450-year-old sediments600-year-old sediments650-year-old sediments1,000-year-old sediments
- 9. Multiple ChoiceA scientist finds an index fossil in layers of rock in both Africa and South America. What does this indicate about the ages of rocks?The African rock is older.The South American rock is older.The rocks are younger than the fossils.The rocks are approximately the same age.
- 10. Multiple ChoiceWhich part of Earth's history is best shown by analysis of ice cores?changes in climatechanges in plant growthchanges in the amounts of precipitationchanges in the formation of rock layers.
- 11. Multiple ChoiceA scientists finds the bones of a dinosaur. What could help the scientist determine the approximate age of the dinosaur bones?the birds living in the area of the bonesthe weather conditions in the area of the bones.the kinds of trees living in the area of the bones.the index fossils in the area of the bones.
- 12. Multiple ChoiceWhich statement best describes the Law of Superposition?each sedimentary layer of rock represents 1,000 years of Earth’s age, much like the rings of a tree.In undisturbed layers of sedimentary rock, the upper rock layers are older than the lower rock layers.In undisturbed layers of sedimentary rock, the lowest layers contain the older rocks.Rocks that form near volcanoes are older than surrounding rock.
- 13. Multiple ChoiceHow do scientists know that some mountains were once at the bottom of an ocean?freshwater rivers flow to the ocean.saltwater fish are found in some mountain streams.dinosaur bones have been discovered in the mountains.marine fossils have been found on the peaks of some mountains.
- 14. Multiple ChoiceWhich best describes how ice cores are important to the study of geologic history?they show unconformities, which signal changes in deposition.they hold index fossils, which are used to date the different ice cores.they contain evidence showing changes in the atmospheric composition over time.they follow the Law of Superposition, which gives reasons for extinctions of species.
- 15. Multiple Choice
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?
dinosaurs ate plants.
dinosaurs were eaten by the mammals.
dinosaurs lived on Earth before the mammals.
dinosaurs are extinct.
- 16. Multiple Choice
Which is a process that allows scientists to COMPARE rock layers with others in a sequence to determine their age?
radiometric dating
absolute dating
relative dating
speed dating
- 17. Multiple Choice
What can be used to find the exact age of a rock specimen?
ice cores
index fossils
radioactive dating
a Google search
- 18. Multiple Choice
Which chemical compound is found in an ice core sample?
carbon dioxide
nitrogen dioxide
carbon monoxide
no compounds are found in ice cores
- 19. Multiple Choice
Which best represents the purpose of ice core drilling?
to study changes in gravity
to study changes in climate
to determine the relative age of fossils
cooling your sodas on a picnic
- 20. Multiple Choice
What role do faults play in the Law of Superposition?
faults create new types of rocks.
faults are younger than the layers they cut through.
faults are the same age as the layers they cut through.
faults are older than the layers they cut through.
- 21. Multiple Choice
What are trace fossils?
fossilized tracks or other evidence of an organisms activity
fossilized wastes
parts of the original organism
small fossils
- 22. Multiple Choice
Why are index fossils used as guides to determine the age of rocks?
each index fossil lived during a specific geologic time period.
all index fossils lived during all the periods of geologic time.
index fossils are very rare and not commonly found in rocks.
index fossils are found in igneous rocks.
- 23. Multiple ChoiceWhich are scientists most likely to use to estimate the age of the Earth?rock layerssoil samplesorganic fossilswater samples
- 24. Multiple Choice
Which era is the most recent?
Cenozoic
Paleozoic
Precambrian
Mesozoic
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