2023 8.E.2.1 Geologic time and Fossils

During which era of geologic time did the first humans appear?

• Precambrian

• Mesozoic

• Cenozoic

• Paleozoic

Paleontologists are scientists who study evidence of past life on Earth. Which method do paleontologists MOST likely use to determine the forms of life that existed millions of years ago?

• interview older scientists

• examine fossils records

• research past species in the library

• examine current species of plants and animals

Fossils are found in these rock layers

• igneous rocks

• sedimentary rocks

• metamorphic rocks

• lava

What kind of rock are fossils found in?

• intrusive igneous

• extrusive igneous

• metamorphic

• sedimentary

What kind of rock are fossils found in?

• intrusive igneous

• extrusive igneous

• metamorphic

• sedimentary

Which of the following best describes the geologic time scale?

• It is a record of the thickness of sedimentary rock

• It is a record of the life forms and geologic events in Earth's history based on fossils

• It is a record of the rate of fossil formation

• It is a record of the time since the extinction of the dinosaurs

What era do we live in now?

• precambrian

• paleozoic

• mesozoic

• cenozoic

What era were dinosaurs alive?

• precambrian

• paleozoic

• mesozoic

• cenozoic

Which era was the longest?

• precambrian

• paleozoic

• mesozoic

• cenozoic

In what type of rock would a geologist MOST likely find evidence of ancient life?

• sedimentary

• foliated

• metamorphic

• volcanic