Unit 6 Review

When the last of its kind dies, a species is _______________ .

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NGSS.MS-LS4-1

The remains or traces of a plant or animal that lived long ago is a(n)

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NGSS.MS-LS4-1

NGSS.MS-LS4-2

An event that results in the dying off of many species is called a(n) ________________.

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NGSS.MS-LS4-1

An impression of an organism, formed when sediment hardens around the organism, is called a(n) ________________________.

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NGSS.MS-LS4-1

A model of an organism, formed when sediment fills a mold and hardens, is a(n) ______________ .

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NGSS.MS-LS4-1

A fossil of a type of organism that lived in many places during a relatively short time span is called a(n)

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NGSS.MS-LS4-1

Not every animal or plant becomes a fossil when it dies. Which event best helps a fossil form?

• Water washes away dirt.

• Animals eat the soft tissues.

• Wind blows the dead organism away.

• Sediment quickly buries the dead organism.

Josh read about a land animal whose fossils were found in similar rock layers in Africa and South America. What can he conclude from this discovery?

• Animal fossils all look alike.

• The landmasses were once joined.

• The animals swam across the ocean.

• The fossils formed in an ocean and

  washed ashore.

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NGSS.MS-ESS2-3

Nate found a piece of amber.

Which object shown below would the amber most likely contain?

• 
• 
• 
• 

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NGSS.MS-LS4-1

Malaya was collecting fossils. She found one whose original material had been replaced by quartz. What type of fossil did she find?

• trace fossil

• carbon film

• petrified wood

• mummified body