Content Review #1

The geologic time scale is a record of....

• the history of fossils only
• the history of rocks
• the history of rock layers and fossils
• geologist notes

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___________ a record of the geologic events and the evolution of life forms as shown in the fossil record. 

• Eras
• Geologic Time Scale

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Dinosaurs, small mammals, and birds are found in this time period.

• Precambrian

• Paleozoic

• Mesozoic

• Cenozoic

People who study fossils are called ____.

• meterologists
• fossilologists
• paleontologists
• fossil hunters

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In which kind of rock do we usually find a fossil?

• sedimentary  rock
• metamorphic rock
• igneous rock

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What needs to happen FIRST for a fossil to form?

• A plant or animal must be covered by sediment.

• A plant or animal must die and decompose.

• Sediments fill a a mold to form a cast.

• An earthquake shifts the land up.

This type of fossil is tree sap hardened and replaced by minerals.

• Petrified wood

• Imprint

• Amber

• Mold

Scientist study the ____________________ to learn about the history of life, past environments on Earth, and how different groups of organisms have changed over time.

• fossil record

• animal record

• historical record

• Earth record

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Describes a group of living things that are no longer living.

• fossil

• extinct

• endangered

• dinosaur

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Why are there more animal fossils than plant fossils?

• Animals are smaller than plants.

• Plants have harder bodies than animals.

• Plans have softer bodies than animals.

• Animals eat plants.