Exploring Earth's Geological Eras

Which era is known as the earliest and longest era in Earth's history?

• Mesozoic era

• Precambrian era

• Cenozoic era

• Quarternary period

What is the law of superposition used to determine?

• The chemical composition of rocks

• The relative ages of rock layers

• The temperature of ancient climates

• The speed of tectonic plate movement

Tags

NGSS.MS-ESS1-4

Which era is often called the "Age of Reptiles"?

• Precambrian era

• Cenozoic era

• Mesozoic era

• Quarternary period

Which method uses radioactive isotopes to determine the actual age of rocks?

• Relative dating

• Absolute dating

• Law of superposition

• Fossil correlation

Which period is part of the Cenozoic era and includes the present day?

• Jurassic period

• Quarternary period

• Cambrian period

• Triassic period

Which of the following best describes the climate during the Cenozoic era?

• Mostly hot and dry

• Marked by significant cooling and ice ages

• Constantly warm and humid

• No significant climate changes

Which life forms were most dominant during the Mesozoic era?

• Mammals

• Dinosaurs and reptiles

• Fish and amphibians

• Insects

Tags

NGSS.MS-LS4-1

If a geologist finds a fossil in a lower rock layer and another fossil in a higher layer, what can they infer using the law of superposition?

• The fossil in the higher layer is older

• The fossil in the lower layer is older

• Both fossils are the same age

• The fossils are unrelated

Tags

NGSS.MS-ESS1-4

How does relative dating help scientists determine the age of rocks?

• By measuring radioactive decay

• By comparing the position of rock layers

• By analyzing chemical composition

• By using fossils only

Tags

NGSS.MS-ESS1-4

Which of the following is an example of absolute dating?

• Comparing fossils in different layers

• Using carbon-14 to date a bone

• Observing the color of rocks

• Matching rock types across regions