Fossils and Extinction

Environments have changed over millions of years. Which of these would be BEST for a scientist to study when investigating these environmental changes?

• volcanic deposits

• wave patterns

• fossil records

• ocean currents

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NGSS.MS-LS4-1

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

In the model are rock strata and fossils. The fish fossil is in the first layer of the rock strata, is this the youngest or oldest fossil in these rock strata layers?

• Youngest

• Oldest

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NGSS.MS-ESS1-4

Scientists theorize that the ancient horse on the left is related to the modern horse on the right. The scientists theorize that the horse has gone through many changes over time. How did the scientists conclude that the animal changed over time?

• by examining fossil records

• by learning about natural selection

• by studying deposition of sediments

• by observing different types of rock formations

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Fossils are the preserved ____ of once living organisms.

• plants

• adaptations

• remains

• variations

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NGSS.MS-LS4-1

What type of fossil is this?

• Cast fossil

• Mold fossil

• Petrified fossil

• Trace fossil

The end of an era, and the end of life for groups of organisms, is called?

• Death

• Crossing Over

• Mass Extinction

• Rainbow Bridge

Tags

NGSS.MS-LS4-1

What statement is true about fossils?

• Some living things have not really changed in millions of years.

• All living organisms leave behind fossils.

• Fossils show that camels never change.

• Plant fossils have never changed.

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NGSS.MS-LS4-1

NGSS.MS-LS4-2

The preserved remains or traces of organisms that once lived on Earth. They are important because they provide evidence of the past.

• cementation

• erosion

• fossils

• weathering

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NGSS.MS-LS4-1

NGSS.MS-LS4-2

Which step in fossilization comes first?

• An organism dies and the soft part of it decays.

• Over time, layers build pressure that turn the layers to stone.

• Wind and water erosion expose the fossil to the surface.

• Minerals around the skeleton preserve the bones.

In the Picture - Where are the oldest fossils of the organisms that lived longest ago found?

• At the bottom layer

• At the top layer

• In the middle layer

Tags

NGSS.MS-ESS1-4