Topic 6 Lesson 1 Patterns in Fossils and Rock Formations

A scientist discovers a body fossil of a fish.

Place the events into the correct order to describe how the body fossil formed. What was the first step of the sequence?

• An organism dies.

• A fossil forms.

• Bones are replaced by minerals.

• Soft tissue decays.

A scientist discovers a body fossil of a fish.

Place the events into the correct order to describe how the body fossil formed. What was the second step of the sequence?

• An organism dies.

• A fossil forms.

• Bones are replaced by minerals.

• Soft tissue decays.

A scientist discovers a body fossil of a fish.

Place the events into the correct order to describe how the body fossil formed. What was the third step of the sequence?

• An organism dies.

• A fossil forms.

• Bones are replaced by minerals.

• Soft tissue decays.

A scientist discovers a body fossil of a fish.

Place the events into the correct order to describe how the body fossil formed. What was the fourth step of the sequence?

• An organism dies.

• A fossil forms.

• Bones are replaced by minerals.

• Soft tissue decays.

Tags

NGSS.MS-LS4-1

Wyatt draws a picture of what he observed while viewing the Grand Canyon.

What evidence is shown in the picture to support the fact that Grand Canyon rocks are examples of sedimentary strata?

• The rocks are near a riverbed.

• The layers of rock are in vertical patterns.

• The layers of rock are in horizontal patterns.

• The rocks have smooth edges.

Tags

NGSS.MS-ESS1-4

A scientist claims that dinosaurs became extinct 65 million years ago. What evidence best supports this claim?

• a fossil record

• horizontal rock patterns

• a trace fossil

• sediment samples

Tags

NGSS.MS-LS4-1

A team of scientists found fossils of several organisms. They determined when the organisms lived based on the layer of rock in which each fossil was found. One scientist created a basic time line of the team’s findings.

Use the information in the time line to complete the sentence.

Trilobites went extinct about ____________ million years ago at the ______________ of the ___________________ era.

• 250; end; Paleozoic

• 650; onset; Mesozoic

• 65; end; Cenozoic

• 550; middle; Precambrian

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

A geologist discovered a saber-toothed cat fossil. This fossil lived during the _______________ era and is considered to be about _________________ million years old.

• Cenozoic; 65

• Mesozoic; 550

• Paleozoic; 250

• Precambrian; 650

Tags

NGSS.MS-ESS1-4